HCF LCM_8
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00:00you
00:30you
00:38Jai Hind, Dosto Swagat hai aapka aapke apne parivaar mein, kaise hain aap log bataiye, radhe radhe bhai, radhe radhe, sabhi logon ko radhe radhe
00:47kaise ho bhai, badiya ho, sab first class ho
00:51batao
00:53badiya bhai, badiya, badiya, pranam pranam pranam, sabhi logon ko pranam
00:57badiya ho aap log, kaise hain aap log ke baal bachche, sab sukhi hain, sampan hain, first class hain, batao bhai
01:05volume badhao, volume badha hoa hai, baaki agar aapko lag raha hai, volume kam hai, to sir humne volume badha di hai
01:12aur jitne bachche SSCGD ki tyaari karte hain, unke liye ek bahut hi achi khabar hai
01:18SSCGD ki jo lag bag vacancy thi, wo 26,000 ke kareeb mein thi
01:22lekin ab ye vacancy badh kar ke jo hai, wo 46,617 ke kareeb mein ho gayi hai
01:28to jo bachche SSCGD ki 2024 ka, jino ne paper diya tha, jinke answer ki aa gaye the, unke liye ek bahut hi achi khabar hai
01:35mere bhai yaha par, aksar hum log ye dekhte hain ki
01:38jab bhi koi pariksha hoti hai, aur jab result aane wala hota hai, to waha par kya rehta hai, ki waha par vacancy kam ho jati hai
01:45tod diya jata hai, vacancy ko kam kar diya jata hai, lekin aisa pehli baar maine dekha hai, ab tak ke itne samay ke itihaas mein
01:51ki result aane wala ho, aur vacancy ko itni zyada badha di jaye, to ye bachcho ke favor mein kaafi achi baat hai, aur saath mein isme
01:58jo bachche SSCGD ki tyari kar rahe hain mere bhai, unke liye bhi kaafi zyada acha hai
02:02nai government jaise bani hain yaha par, uske baad mein ye unka pehla action hai, aur kahi na kahi isme central government ka bhi haath rahta hai
02:09kahi na kahi unke aadesh ki bina koi cheezein nahi ho sakte hain, to ek achha decision hum maan sakte hain central government ke dora
02:15jo yuvaon ke hitme yaha par jo hai, wo liya gaya hai, to ye mere bhai ek bahot achi kabar hai, aur bahot baniya hai, abhi maine iske liye video complete bana karke
02:24rankers gurukul channel par daal diya gaya hai, ajo bhai, ek bachcha keh rahe hai, sir aap bahot chutti karta ho, chutti nahi karta ho yaar, dekho asal mein kya hai na
02:33ki kaafi saari cheezein handle karni hoti hain, ek taraf aap logon ke liye youtube par ek 11 din, ek 11 mock test main laga rakha hai
02:39uske baad mein application ki 2 classes bhi hain, offline ki bhi classes hain, publication bhi hain, kaafi cheezein ho jati hain
02:45kai baar kuch aise emergency work aa jaate hain, jiske wajah se nahi chahate hu bhi, pehle to main sochta hu ki yaar, koi baat nahi, 7 wajah se liye lunga
02:52thoda delay karke liye lunga, lekin jab ekdum hati ho jata hai na, ki ye sambhav hi nahi hai ye cheeze lena, to waha par mere bhai class ko reschedule yaha par karna padta hai
03:02pek hai, to aisa mere bhai aur koi purpose nahi rahata hai, koi aisa nahi hai ki vacation pe chale jaate hain, to ghoomne chale jaate hain, to party karne chale jaate hain, aapko bhi pata hai
03:11youtube par kis tariqe se joor soor ke saath mein 11 mock test ki class aapki chal rahi hai, aur wo kahi na kahi aap logon ke liye beneficial hai
03:17aapmein se agar mujhe koi ye bolega, nahi sir humein to application se matlab hai, youtube se matlab hi nahi hai, to ye sabse galat soch hai
03:23kaaran main aapko batata hu, aap hai na, mere se 7 maeena, 8 maeena continuously aap mere saath padte rahoge
03:29lekin uske baad bhi hai na, 8 maeene ke baad mein, jab aap kabhi sectional mock laga karke dekhna, aapko khud pata chal jayega
03:35ki kitni cheezein aapko aa rahi hain, aur kitni cheezein aapke dimaag se dhundli ho chuki hain
03:39agar kisi bachche ka 10 topic bhi complete hai na, to bhi main usko invite kar raho, ki youtube wale session mein tum zarur live raha karo
03:46poore din tumne kya padha, kya nahi padha, mere bhai, wo tumhare haath mein
03:49lekin aap apne jeevan ka, roj daily ka mujhe ye ganta do, mock test wali class mein, taaki usmein hum aapki mix practice jo hai wo karwa paye
03:57to wo bhi zaruri hai, zyada din ki baat hi nahi hai, 11 mock test hai, 4 humare ho chuke hain, aaj 5 baah hai
04:02to jaise wo humare series katam ho jayega, fir thodi bahut jo classes disturb hoi hain, wo nahi hongi
04:07to next week se regular format mein classes chalenge, uske liye parishan hone ki zarurat nahi hai
04:13aajao chalo, baaki fir bhi koshish karta hu, ki 2 mein se 1 class to definitely ho hi ho, chahe agar doosri cancel bhi hogayi to
04:20aaja ye, next yahaan par padhte hain, aur sawal ka mere bhai uttar dete hain, question no. 64 mein kya kaha gaya hai, zara padho
04:27to question no. 64 mein yahaan par ye bola gaya hai, ki let x be the least number, which when divided by 16, 24, 30, 36, and 45
04:36and the remainder in each case is 4, x is divisible by 28, if the hcf of x and 3193 is y, what is the sum of digit of y
04:45yahaan se jo kuch sawal hain na, humare 2-4 sawal hain mere bhai, wo thode se kaafi aise sawal hain, ki jine aap baniya category mein kar sakte hain
04:52isa hafte mein aapka ye topic khatam ho jana hai, to monday se main naya topic start kar dunga, ab ye sawal ko banane ke asal mein 2 method hain
04:59aur main aapko yahaan par iske 2 method bataunga, ki aap ise short mein kaise kar sakte hain, aur aap ise mere bhai yahaan par long mein kaise kar sakte hain
05:06to jaise agar aap yahaan par dekhe, to is sawal mein is level ka matlab banaya gaya hai na, ye kisi exam mein pucha nahi hain, ye kisi mock test mein aaya hua tha
05:14ye kisi exam mein pucha nahi hain, ye kisi exam mein pucha nahi hain, ye kisi exam mein pucha nahi hain, ye kisi exam mein pucha nahi hain, ye kisi exam mein pucha nahi hain,
05:23isliye humne socha ki ye sawal aapko karaya jaye, ab ye examiner ne jo question banaya hoga na, ye pakka aapko fail karne ke iraadah se banaya hain, pass karne ke iraadah se to nahi
05:33matlab pehle yahaan par x ke baare mein ye kaha hai, ki x mere bhai yahaan par sabse choti sankhya hai, jisse agar aap 16 se, 24 se, 30 se, 36 se, aur 45 se vibhajit karte ho
05:44to har ek istiti mein 4 seshwal bhajta hai, to yahaan par pehle humne x ka mana pata karna hoga, kaise pata karna hoga, to in sabka LCM le karke, remainder jod karke aur tab pata karna hoga,
05:55fir baad mein x ke baare mein ek aur kahaani bola, ki x amara 28 se vibhaj jaye, to agar x kisi sankhya ka multiple hai, to humne LCM me bhi multiple ka sahara lena hoga,
06:04agar x multiple nahi hota hai, to LCM nahi lete hain, aur x agar multiple hota hai, to LCM ka bhi multiple lete hain,
06:12thik hai, fir waha se aapka x ka value aayega, thik hai, jaise n barabar 1, n barabar 2, n barabar 3, jitna bhi hai, rakh karke check karenge, ki kabhi 28 se kat raha hai,
06:20jab aapka x ka mana jayega, tab last mein examiner ne bola hai, yadi x ka aur is sankhya ka, humara HCF, humara y hai, to main aapko pehle method number 1,
06:30seedha short trick se batata ho, ki aap yahaan par ye dekho, method number 1, aur ye mere bhai kis se hai, to short trick se hai,
06:37is pehle sawal mein huma aapko short trick batayenge, aur baad mein jo hai yahaan par, iska huma aapko method batayenge, ki iska method kya hoga,
06:44to bola gaya ki yadi x ka aur 3193 ka, aap agar dekhoge to x ka aur 3193 ka mere bhai, in dono ka jo humara HCF hai, wo humara kitna hai,
06:54to wo humara jo HCF ho mere bhai yahaan par y hai, thik hai, to bola gaya y ka jo bhi tumhara digit ka sum aayega, wo yahaan par tu mujhe bata do,
07:03ab ek choti si baat batao bhai, HCF kaun se sankhya hoti hai, wahin sankhya jo dono ko bhi bhajye kar paye,
07:09main yahaan par dekh pa rahe hoon, mujhe x ka maan pata nahi hai, to main to HCF nahi nikal sakta, nikal sakta hoon,
07:14kaise nikal sakta hoon, wo dekho, aap ek baat batao na, aap yahaan par ye choti si baat ko dekho, ki jo ye aapka 3193 hai,
07:21ye mere bhai kis se kat raha hai, to ye 31 se 1 baar mein, 31 se 3 baar mein, yaani agar main karunga,
07:27to 31 se mere bhai ye 103 baar mein katega, thik hai, to yahaan par iske kya kya multiple hai, to ye 1 hai,
07:3431 hai, aur mere bhai yahaan par ye hai, to jo HCF hota hai, wo yahaan par HCF kya hota hai,
07:40HCF yahaan par in dono mein kya kya hota hai, to HCF ka matlab ye mere bhai kya hota hai, jo dono mein common nikal jaye,
07:47to yahaan par dono mein mere bhai yahaan par 1 aur 1 common nikal sakta hai, kyun, kyunki dekho ye prime number hai,
07:52ye aapka kya hai, to ye prime number hai, ye aapka kya hai, to prime number hai, to ye koi aur sankhya mein nahi tootega,
07:58aur ye koi aur sankhya mein nahi tootega, yaani ye 1 se katega, is se katega, aur is se katega,
08:03yaani dono mein mere bhai yahaan par to 1 common hota hai, ya phir dono mein mere bhai yahaan par 31 common hota hai,
08:10ya phir dono logon mein 103 common hota hai, agar yahaan par 1 hoga, to iska sum of digit kitna hoga 1,
08:173 plus 1 kitna hoga to 4, 3 plus 1 kitna hoga to 4,
08:211 diya gaya hai option mein, to nahi diya gaya hai, iska matlab ye nahi hai, to 4 diya gaya hai, to option number ye jo hai correct answer hai,
08:28yaani ye poore sawal ko hal kiye bina, mere bhai aap yahaan par bahut hi short approach se udha sakte the,
08:34phir se mai repeat karta hu, basic karoge, tumhare tumhare bachcho dono ki saadi ho jayegi mere bhai,
08:39tab bhi confusion bana rehega, lekin agar aap isme smart approach apna hoge, to mat nikalo x ki value yahaan par kya hai,
08:45koi fark nahi padta hai, ye bola gaya hai ki is sankhya aur is sankhya ka mohattam samavartak jo hai wo y hai,
08:51aur y ke anko ko jod karke bata ho, mohattam samavartak ka matlab kya hota hai,
08:56jo dono mein common nikal jaye, jab maine dekha 31 se ye ja raha hai, kitni baar mein, 103 baar mein,
09:02to yaani ye 1 se cut sakta hai, 31 se cut sakta hai, 103 se, agar ye prime nahi hota to aur sankhyaon mein toot jata,
09:08chuki ye prime hai to nahi tootega, to agar dono ka HCF 1 hua, ya phir dono ka HCF ye ho sakta hai,
09:14to agar aisi stiti aayi to agar ye hua HCF, to sum of digit 1 hoga, ye hua HCF to 3 plus 1 mere bhai 4 hoga,
09:22aur agar ye hua to 3 plus 1 4 hoga, 1 option mein tha nahi, isi wajah se mere bhai 4 ko humne tick kar diya,
09:29ab yahaan par baat aati hai isko basic se banane ki,
09:34to agar hum yahaan par baat karte hain mere bhai, to hum isko basic se kaise banayenge,
09:39jo bachche basic ke liye mere bhai bolenge, unke bolne ke pehle hi,
09:42main aap logon ko ye jo sawal hai, ye basic se kara deta ho, agar aap yahaan dekhoge na,
09:47to sir basic se ab samajhna, basic se wahi tha jo kalki class mein sikhaya, last class mein aapko bataya,
09:52pehli baat yahaan par X naam ki sankhya kaisi hai, to X naam ki sankhya jo hai,
09:56wo mere bhai yahaan par kya hai, to LCM, aur kiska 16, 24, 30, 36, 45, ho jayega 16, phir ho jayega 24,
10:03phir ho jayega 30, phir ho jayega 36, phir ho jayega 45, aur in sab ke multiple se kitna
10:11zyada hai, to mere bhai yahaan par 4 zyada hai, to bola gaya maan liye X abse choti sankhya hai,
10:16jo 16, 24, 30, 36, 45 se mere bhai vibhaji karne pe 4 seshwal bache, aur X jo hai wo 28 se vibhaji
10:25hai, to X mere bhai 28 se vibhaji hai, iska matlab X bhi to kahi na kahi 28 ka multiple hai,
10:34aur agar X humaar 28 ka multiple hai, to agar yahaan multiple dene ki baat ki gayi hai,
10:38to hum bhi LCM ka kya lenge, to hum bhi mere bhai yahaan par LCM ka multiple lenge.
10:44Pratigya keh rahi hain ki sir agar option mein 1 aur 4 dono hoto, tabhi to pratigya hum aapko
10:49basic bhi bata rahe hain, nahi to hum aapko basic bina bataya aage bad gaye hote,
10:53main to bas yahaan par yeh kaha ki mere nazron mein yeh dikha ki yaar isko short
10:56mein aise banaya jaa sakta tha, isi wajah se mere dimaag mein wo approach aaya,
11:00to main bata diya aapko, baaki hum aapko basic pratigya to bata hi rahe hain,
11:03aisa thodi kaha hai ki yahi ek method hai, isi se karna paper mein, yahi lagana,
11:08iske alawa kuch mat karna, possible hi nahi bhai, aise faldo ke shabd maine kahi nahi hai.
11:13Ab yahaan par dekhiye mere bhai kya bola gaya, to yahaan par jaise kaha gaya ki dekho X jo
11:17hai wo in sab ke multiple mein mere bhai 4 zyada hai, ab baat yahaan par yeh aati hai,
11:21in sab ka multiple kitna hoga, to dekho yahaan par 16 aur 24, in ka multiple jo hoga wo kitna
11:27hoga mere bhai, to 48 hoga, 36 ka mere bhai aur 36, 36, 45 in calcium kitna hota hai,
11:33180 hota hai, dikhe aur 180 matlab yeh teeno calcium humara kitna hoga, to 180 hoga.
11:38Ab agar hum dekhte hai, to hum yahaan par yeh bolenge, sir yeh 4 ka kitna guna hai,
11:42to 12 guna aur yeh 4 ka kitna guna, to 45, 12 se bhi aap keh sakte ho,
11:47sir 12 se agar hum kaumal nenge, to yeh 12 ka 4 guna hai, aur 12 se kaumal nenge,
11:51to 12 ka yeh 15 guna hai, to dono jagah par 12 hai, to 12 aayega, aur 15 chuke 60 hai,
11:56to yeh aayega, aur 12 into 60 humara 72, yaani 720, to agar aap in calcium dekhoge,
12:01to yeh aayega sir, 720 ke multiple se, kitna zyada to 4 zyada.
12:06Ab humare saath mein yahaan par challenge kya hai, to humare saath mein mere bhai yahaan par
12:09challenge yeh hai, question mein humein bade saaf lafzo mein yeh baat bola gaya hai,
12:13x jo hai wo 28 se katna chahiye, to x 28 se katna chahiye, to hum yahaan par pehle hi
12:18isko jo hai, wo 28 se kaat karke dekhenge, ki jo yeh humare x ki value 720 n plus humara
12:24kitna hai, 4 hai, yeh 28 se kate, to jab hum 28 se yahaan par kaatenge, to yahaan dekhlo
12:30jo remainder bachega na, wo likhna hota hai, jaise maale je 720 ko agar aap 28 se kaatne
12:35hai, to 28 se yahaan par kitni baar mein, to 2 baar mein, kitna ho jayega, 56, tikhe,
12:40uske baad mein yahaan par 160 ho jayega, 28 ka mere bhai kitna ho gaya, 28 ka 2 guna 56,
12:4656 ka yahaan par 28 ka mere bhai 5 guna, 28 ka 5 guna kitna hota hai 140, to 28 ka 5 guna
12:52kitna ho jayega 20, 25, 28, 40, 140, to remainder humara kitna bachega, to 20 bachega, yaani
12:5828 jab isko bhaag karega, to yahaan par remainder kitna bachega, to 20 n bachega, aur 28 jab
13:04isko bhaag karega, to remainder kitna bachega, to 4 bachega, ab yahaan par kya karo, n ki
13:09value ko le lo, agar yahaan par kya karo, to mere bhai n ki value ko lo, to n ki value
13:13ko loge, to maano jab chota wala n loge yahaan par 1, to ye kitna ho jayega, 20 into 1 plus
13:194, yaani 24, 24 humara 28 se katega, to bologe nahi guru ji nahi katega, n ki value ko jab
13:25yahaan par 2 loge, to common sense ki baat hai, 20, 20, 40 aur 44 nahi katega, n ki value
13:31ko 2 loge, 60 aur 4, 64 nahi katega, n ki value ko 4 loge, to 80 aur 4, mere bhai 84,
13:37to jab n ki value ko hum yahaan par 4 lete hain, jab n ki value ko yahaan par kitna lete
13:42hain, 4 lete hain, to 20 ka 4 guna 80 aur 4 84 hota hai, 84 hota hai, 84 humara 28 se
13:48kitni baar mein kate jaayega, to mere bhai 28 se humara 3 baar mein kate jaayega, to
13:52ye fix hogaya ki n ki value kitni leni hai, 4, ab agar n ki value 4 leni hai, to ye jo
13:58x ka maan aayega, ye humara kitna aayega, to x ka maan humara 720 n plus kitna hai,
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21:51to ye x ka maan aayega,
21:55to ye x ka maan aayega,
21:59to ye x ka maan aayega,
22:03to ye x ka maan aayega,
22:07to ye x ka maan aayega,
22:11to ye x ka maan aayega,
22:15to ye x ka maan aayega,
22:19to ye x ka maan aayega,
22:23to ye x ka maan aayega,
22:27to ye x ka maan aayega,
22:31to ye x ka maan aayega,
22:35to ye x ka maan aayega,
22:39to ye x ka maan aayega,
22:43to ye x ka maan aayega,
22:47to ye x ka maan aayega,
22:51to ye x ka maan aayega,
22:55to ye x ka maan aayega,
22:59to ye x ka maan aayega,
23:03to ye x ka maan aayega,
23:07to ye x ka maan aayega,
23:11to ye x ka maan aayega,
23:15to ye x ka maan aayega,
23:19to ye x ka maan aayega,
23:23to ye x ka maan aayega,
23:27to ye x ka maan aayega,
23:31to ye x ka maan aayega,
23:35to ye x ka maan aayega,
23:39to ye x ka maan aayega,
23:43to ye x ka maan aayega,
23:47to ye x ka maan aayega,
23:51to ye x ka maan aayega,
23:55to ye x ka maan aayega,
23:59to ye x ka maan aayega,
24:03to ye x ka maan aayega,
24:07to ye x ka maan aayega,
24:11to ye x ka maan aayega,
24:15to ye x ka maan aayega,
24:19to ye x ka maan aayega,
24:23to ye x ka maan aayega,
24:27to ye x ka maan aayega,
24:31to ye x ka maan aayega,
24:35to ye x ka maan aayega,
24:39to ye x ka maan aayega,
24:43to ye x ka maan aayega,
24:47to ye x ka maan aayega,
24:51to ye x ka maan aayega,
24:55to ye x ka maan aayega,
24:59to ye x ka maan aayega,
25:03to ye x ka maan aayega,
25:07to ye x ka maan aayega,
25:11to ye x ka maan aayega,
25:15to ye x ka maan aayega,
25:19to ye x ka maan aayega,
25:23to ye x ka maan aayega,
25:27to ye x ka maan aayega,
25:31to ye x ka maan aayega,
25:35to ye x ka maan aayega,
25:39to ye x ka maan aayega,
25:43to ye x ka maan aayega,
25:47to ye x ka maan aayega,
25:51to ye x ka maan aayega,
25:55So, if you take these 4 as man,
25:57What will you call it?
25:58540 multiplied by 4,
26:00by 2.
26:02500 multiplied by 4 is 2040 multiplied by 4 is 260.
26:05So, we will have our accumulation at 2162.
26:08The value of x will be 2162.
26:10Now, this x value came.
26:12In the question, here it is said
26:14that this number and its Risk Factor
26:16is y.
26:18That is, what level your y is at?
26:20It is working for Risk Factor.
26:22Who is working here?
26:24sorry
26:252162, and who else is working on it?
26:281932, what is the basic mantra of HCF?
26:31my brother, to take difference
26:34what is the basic mantra of HCF? to take difference
26:37so if you take difference of both of these
26:40so what will be the difference of both of these? 2 to 2 is finished
26:436 to 3 is finished, after that 11 to 9 will be finished
26:46this is your difference my brother, 230
26:49now in 230, you also know practically that
26:520 is there, ok, here this 0 is there
26:55ok, this 0 my brother will not cut both of them
26:58we will remove 0, if we remove 0 here
27:01because understand, what is the meaning of HCF?
27:04highest common factor, how much we have taken from here my brother
27:07so see, 2 to 2 is finished, 6 to 3 is finished my brother
27:10ok, we have done the right thing here
27:13now this is 230, so in 230 my brother, from whom is this made?
27:16so actually this is made by 23
27:19and from whom is N2 made? from 10
27:22now 10 will not cut this, nor 10 will cut this
27:25so 23 is left, and 23 is a prime number
27:28so if this is a prime number, then my brother, this will work here
27:31of HCF, means this is the value of Y
27:34after cutting from 23, if you want you can see
27:3723 my brother will cut both of them here, ok
27:40understood the thing here?
27:43how much will 23 cut here?
27:46sir, how can it cut?
27:49if we take N equal to 3
27:52then 69 plus 2 will become 71
27:55and how will 71 cut from 47?
27:58so it will not cut here, so because of this
28:01we cannot do this bad thing, now you understood my point
28:04now 23 will cut both of them
28:07this means the value of Y here is 23
28:10and its sum of digit is asked
28:13sum of digit will be 5
28:16option number C will be the correct answer
28:19so this was a small question, and not small, it was a very good question
28:22if you see here
28:25X will be a number
28:28which will give 2 remainder after dividing
28:31and will also have a multiple of 47
28:34so if someone's multiple is asked, then we take its multiple
28:37now this number should be divided by 47
28:40ok
28:43if it should be divided by 47
28:46if you divide 540 by 47
28:49then it will have a multiple of 11 something
28:52and in the end 23 will be left, so if 47 will divide
28:55then 23 will come, 47 will divide, 2 will come
28:58now we have to keep the value of N, first 1, then 2, then 3, then 4
29:01as I keep the value of N as 4, 92 plus 2 will become 94
29:04which will be cut from 47
29:07so if 47 is cut from here
29:10then the value of N is confirmed as 4
29:13we keep the value of N as 4 here, not here
29:16many people keep N as 4 here, this is wrong
29:19you keep the value of N as 4 here
29:22because X is here
29:25so if you keep the value of N as 4 here
29:28then you will get the value of X here
29:31now Y is the HCF of this number
29:34now we have 230 fractions
29:3710 which cuts this, 10 does not cut this
29:40so it is 10 multiplied by 23, 23 is left
29:43now 23 is cutting this, 23 is cutting this
29:46so HCF will be 23
29:49now here, many students are saying that 46 will also happen
29:52can 46 be done? yes, 46 can also be done
29:552 is also cutting
29:5846 can also be done
30:0146 can also be done
30:0446 is also possible
30:07if we see here, we can cut it from 46
30:10and how many times can we cut it from 46?
30:13we can cut it in 5 times
30:16so 46 is made of 23 and 2
30:19so it will cut from 23, 23, 2
30:22so correct this
30:25here 46 is here
30:28so Y value is 46
30:31and if 46 is here
30:34then sum of digit will be
30:374 plus 6
30:40so it will be 10
30:43option number will be B
30:46so keep this in mind
30:49the difference here
30:52if it is breaking
30:55so 46 multiplied by 5
30:5846 is the biggest number
31:01which can cut this and this
31:04because what does HCF mean?
31:07it is cutting 2 and 23
31:10so HCF means the biggest common
31:13so 46 is the biggest common
31:16and sum of digit will be 10
31:19now some questions are easy
31:22read this
31:36now you will learn a special concept
31:39and what is that special concept?
31:42let me tell you
31:45special concept means
31:48ring of bells
31:51suppose there are 4 bells in a temple
31:54one bell rings every 10 sec
31:57second bell rings every 12 sec
32:00third bell rings every 20 sec
32:03so when all bells will ring together?
32:06this will be question number 1
32:09second question will be
32:12red of lights
32:15so red of lights will be
32:18red of lights will be
32:21red of lights will be
32:24red of lights will be
32:27third question will be
32:30in circular motion
32:33so in circular motion
32:36one person completes this circle
32:39in 10 sec
32:42second comes at 20 sec
32:45third comes at 20 sec
32:48third comes at 20 sec
32:51when people are running in multiple
32:54and they have to bring them in common multiple
32:57so what do we find here?
33:00LCM
33:03LCM
33:06you have to remember this
33:09suppose there are 3 bells in a temple
33:12one bell rings every 10 sec
33:1510, 20, 30, 40, 50, 60, 70
33:1810, 20, 30, 40, 50, 60, 70
33:2110, 20, 30, 40, 50, 60, 70
33:2410, 20, 30, 40, 50, 60, 70
33:2710, 20, 30, 40, 50, 60, 70
33:3010, 20, 30, 40, 50, 60, 70
33:3310, 20, 30, 40, 50, 60, 70
33:3610, 20, 30, 40, 50, 60, 70
33:39but there will be one time
33:42when all 3 bells will ring at the same time
33:4560, 60, 60
33:4860, 60, 60
33:5160, 60, 60
33:5460, 60, 60
33:5760, 60, 60
34:0060, 60, 60
34:0360, 60, 60
34:0660, 60, 60
34:0960, 60, 60
34:1260, 60, 60
34:1560, 60, 60
34:1860, 60, 60
34:2160, 60, 60
34:2460, 60, 60
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35:0060, 60, 60
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35:2160, 60, 60
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36:0060, 60, 60
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36:5160, 60, 60
36:5460, 60, 60
36:5760, 60, 60
37:0060, 60, 60
37:0360, 60, 60
37:0660, 60, 60
37:0960, 60, 60
37:1260, 60, 60
37:1560, 60, 60
37:1860, 60, 60
37:2160, 60, 60
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37:3060, 60, 60
37:3360, 60, 60
37:3660, 60, 60
37:3960, 60, 60
37:4260
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37:5160
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