MISSION 100 | Group 1 Prelims | Unit 10 | Aptitude - 6A | LCM & HCF part - 1 | Ms. Divya.T

• This video covers about the TNPSC APTITUDE & MENTAL ABILITY topic how to approach LCM & HCF problems in simple manner along with PREVIOUS YEAR QUESTION & MAINS QUESTION DISCUSSION.
• This content will be helpful for aspirants preparing for any TNPSC exams especially TNPSC GROUP I PRELIMINARY EXAMINATION.
• Learners at any stage of their preparation can be benefited using this video.
• Video has been covered in both Tamil and English.
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[@aimtn]

To Download Solution for Homework sums | click the link below 👇🏼
drive.google.com/file/d/1uTZf6H-Iu1afufbxryNITGr_net0n1TQ/view?usp=sharing

[@kriticaaprakash9921]

mam will u tell us the answer for the last one mam ?

[@aimtn]

LCM & HCF Part 2 video will be published by 3.30pm

[@user-qc9qg1fp4v]

Thank you aim tv

[@akg2807]

நன்றி நன்றி மதிப்பிற்குரிய அம்மா

[@HariniParamanantham]

31) ans: 3240 = 2^3 x 3^4 x 5
3600 = 2^4 x 3^2 x 5^2
H.C.F. = 36 = 2^2 x 3^2.
Since H.C.F. is the product of lowest powers of common factors, the third number must have (2^2 x 3^2) as its factor.
Since L.C.M. is the product of the highest powers of common prime factors.
So the third number must have 3^5 and 7^2 as its factors.
∴ Third number = 2^2 x 3^5 x 7^2.

[@seenivasansprj1850]

Indha sum puriyala..... Konjam explain panringla?

[@pazhaniv1173]

​@@seenivasansprj18502 value question la kuduthutanga,3 rd value ah option la entha value kudutha,namaku kuduthuruka lcm,hcf varum nu paarunga. Hcf na adukula varathula common&small,lcm na big common&uncommon.

[@kalimuthuraj5520]

நன்றிகள் பல 🎉🎉

[@nandavignesh2824]

simple and clear exlpanation. Thank you AIM TN

[@yokeshrathnakumar8886]

Thank You mam
The class was Useful

[@ragulleka772]

Mam anaku last nega teach panna sum confused a iruku

[@PoorniMa-q7k]

well explanation mam🙂🙂

[@jeevamuruga9685]

Most helpful mam thanks mam

[@lakshmikanthan1997]

Nandrigal sola varathigala ila mam. Mathes class super iruku mam. 🙏

[@malathib1366]

Wow great class mam

[@jamalmohamed8804]

Last some option D 2^2 * 3^5 * 7^2

[@nandavignesh2824]

Thank you mam. Thank you AIM TN

[@user-qc9qg1fp4v]

Good afternoon mam 🎉🎉🎉

[@aparnat521]

Really❤ superb

[@k.baskarkkb3419]

Sir please tell me when you're start TNUSRB PC Classes. Will you start new course or I have to refer PC course 2022 videos that posted in last year

[@aimtn]

Except current affairs start your preparation from previous year videos

[@k.baskarkkb3419]

@@aimtn okay sir. Thanks for your reply. I have scored 121 in SI exam I have followed your history Spotify audio podcast last 10 days and took notes all current affairs 12 videos. Geographic physics and chemistry classes are very useful sir. Sir one request Upcoming tests in நோக்கம் app make also available in pdf format. We can't complete entire test in app. In pdf format we print and took test. I started physical training and revision all pc classes..

[@divyasri6493]

Good evening mam 51:29 LCM of 3,2,3 6 dhane L shape method mam

[@divyasri6493]

Sorry msm. Thsts shortcut i understood

[@manikaavian]

Oru pb..la mudunchaa udane.. konjam slide aa vittu..vilagai..nillunga 5s..mam.. because.. copy panumpothu..epdi pause pannalum..idaile irukeega so..

[@divyathiruppathi]

​@@manikaaviannext class la will do.. kindly copy this time from pdf in description

[@mano3876]

Thank you so much mam .......

[@gobicivilservent2657]

Mam 36:29 home work sum, hcf of 513 and 1134 is 81 thana why u marked 27 plz clarify mam

[@divyathiruppathi]

Will share homework sum solved pdf on Wednesday

[@gobicivilservent2657]

Thank u mam

[@elavarasans88]

Thanks

[@AbinayaB-w5s]

3240 = 2^3 × 3^4 × 5
3600 = 2^4 × 3^2 × 5^2
LCM = 2^4 × 3^5 × 5^2 × 7^2
On comparing with LCM.. it shows, third number must have 3^5 and 7^2..
We know HCF = 2^2 × 3^2
Now comparing with HCF third number must have 2^2
So as a whole third number is 2^2 × 3^5 × 7^2..

[@pavithranarayanan8348]

Mam extra oru class ungaluku kidaicha again compund interest topic edunga mam...

[@divyathiruppathi]

Entha type understand agala solunga.. clarify panidalam

[@atharvasriayyanar7934]

Last Qu Ans 2^2 ,3^5,7^2

[@bharathibala-qb9gf]

Good afternoon mam

[@divyadharsiniramasamy746]

Mam plz give anwer for 31.last question. I am not getting anwer.

[@sterenceraj6765]

Thank you mam

[@Krishnakumar-uu3hr]

3600 =2^4×3^2×5^2 and how to find 3 Rd num mam

[@divyathiruppathi]

3240 = 2^3 × 3^4 × 5
3600 = 2^4 × 3^2 × 5^2
LCM = 2^4 × 3^5 × 5^2 × 7^2
On comparing with LCM.. it shows, third number must have 3^5 and 7^2..
We know HCF = 2^2 × 3^2
Now comparing with HCF third number must have 2^2
So as a whole third number is 2^2 × 3^5 × 7^2..
Is it clear now

[@Krishnakumar-uu3hr]

Mam perfect tq a alot❤️

[@Krishnakumar-uu3hr]

@@divyathiruppathi tqqqqqq

[@Lion-0001]

@@divyathiruppathi mam i am having doubt on this problem , pls clarify mam

[@Lion-0001]

@@divyathiruppathi can you again explain this sum in sunday live session mam

[@gp7914]

Test evaluated open aga maitiguthu... Test video I'll madam

[@SanthoshKumar-pu3mo]

qn,31answer = d OPtion mam

[@muthumanickam2482]

Mam qus 11(23,92) common factor illa mam so ithuvum pair of primes than na mam

[@divyathiruppathi]

23 will be common factor for 23 and 92.. so it cannot be co-prime

[@Krishnakumar-uu3hr]

❤

[@BalaMurugan-qs2sc]

What is the difference between prime number and co-prime number

[@BalaMurugan-qs2sc]

Mam @divyatripathi

[@divyathiruppathi]

Prime number has factor of 1 & it's number only.. co-prime numbers are pair of numbers which does not have any common factors between them..

[@BalaMurugan-qs2sc]

​@@divyathiruppathithank you mam

[@suganyaselvakumar2377]

Option D

[@MuthuMuthu-kd8gr]

Simple interest compound interest pdf will not download

[@annaimeena4422]

Option d for last sum

[@saranya-nv7xl]

Logic ah solve panunga mam sums....mains use agum...short cut 1 or 2 sums matum solikudutha ka va irukum mam

[@arunprasanth9598]

Sir next year varakudiya SI exam 2024 ku ipo upload paniruka vedios paduchale podhumang Sir?

[@prasanths8110]

Atiye pandinga bro ca mattum putusa padikanum

[@Krishnakumar-uu3hr]

Mam LCM divisibility puriyala

[@divyathiruppathi]

Will teach in live session again..

[@KarthiKeyan-fl8ss]

31. D

[@aishwaryaa8525]

Epdi vanthuchu??? Pls explain

[@Priya-hv6lb]

Mam last sum answer sollunga mam

[@dividivya148]

6th sum puriyala😢

[@muthukumar-ow1so]

Neenga teach pandradhu eduvume Puriyala

[@noobmasteroo69]

Better drop the prep

[@சம்பூர்ணயோக்யன்]

Enna solreenga 🤔

[@Indhuja-g6p]

31.d

[@AbinayaB-w5s]

3240 = 2^3 × 3^4 × 5
3600 = 2^4 × 3^2 × 5^2
LCM = 2^4 × 3^5 × 5^2 × 7^2
On comparing with LCM.. it shows, third number must have 3^5 and 7^2..
We know HCF = 2^2 × 3^2
Now comparing with HCF third number must have 2^2
So as a whole third number is 2^2 × 3^5 × 7^2..

[@Shambu55]

Umma super

[@mohanapriya3132]

Option D

[@keerthanaarivazhagan4965]

Option D