UPSC CSAT 2022 Previous Year Questions Discussion. Set A (Ques. No. -9)

CSAT plays a very important role for qualifying UPSC CSE Prelims exam and we all know how challenging it has become to get qualifying marks in CSAT.
So, what can be the most reliable and authentic source to prepare for CSAT other than UPSC Previous year question papers.
Hence, in this series we will discuss UPSC CSAT previous year questions.
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[@civilashram]

Correct answer -- Option (b) -- 3^21
Option (c) -- 4^18 can be written as 2^2×18 = 2^36
Option (d) -- 8^12 can be written as 2^3×12 = 2^36
As we can see above, Option (c) and Option (d) are equal, and hence they cannot be the answer.
Option (a) -- 2^40
And 2^40 > 2^36 (Option c and d)
So Option (a) also cannot be the answer as we have to find the smallest number.
So, the answer is Option (b) which is 3^21.
You can find detailed solution in this video -- ua-cam.com/video/HwX9sZm7_nA/v-deo.html

[@rockroy384]

Thank U Mam 😌❤️

[@bhavanasinha2472]

Thanks for this

[@PriyankDixitYT]

thankyou mam you explained very well in less timr

[@GoalIAS25]

Thanks 🙏👍

[@DHANYAKN-if4il]

Thank you

[@RahulRoy-pm2sv]

🎉 congratulations

[@Mishra_2120]

Waooooo😮

[@gamingstudio0.969]

easy peasy ,❣️❣️

[@robinmishra3867]

Ans (B)

[@yashchauhan8545]

Simple logarithm

[@AkashHazra]

uske liye log value yaad rakna padega kiyuki calculator allow nehi hai.

[@LittleNightmare452]

​@@AkashHazrakya bhai dikhte hi ho gaya ye sawal to bas 2 ki ghato ke rup me likhna tha bas aur aajata answer less than 10 sec me

[@RajneeshKumar-gz6lj]

​@@AkashHazrabas log 2 , log 3 ki jarurat hai aur ye usually logon ko pata hota hai

[@Rizvi_girl110]

Aapke solve krne se pehle hi mene soch liya tha ki iska answer 321 hoga 😊😊

[@New_species.]

Thank you man

[@guptajii7495]

Sidha power ko 4 se bhag krdo jo remainder aaya utne se guna krdo simple

[@SHIVSHANKAR-py2qv]

Remainder ko kisse Guna karega

[@guptajii7495]

@@SHIVSHANKAR-py2qv sankhya ko khud ke sankhya se

[@nageshpala9]

Thank you madam ji

[@animeind]

We can use binomial mam

[@SathyaSathyaa-x6k]

Hi mam indha qp laye 24th question ah explain pannunga

[@whyGodmakeuslikethis]

so easy

[@AmanSingh-kj4vx]

Came in nda also

[@achinbatwara8086]

this is a question of binomial theorem

[@cutedog6345]

Logarithm will help

[@ChinmayeeParmar]

3^21

[@aryan_verman_official]

Option (a)

[@Eva23563]

Nice aur bhi ache ache Diya kro

[@anshumm]

b) 3^21

[@gunthuninayaknayak6848]

Option B

[@Jaswantsingh12121]

I solved it without your instruction but it’s my first question of CSAt should I practice to CSAt or focus on ha

[@civilashram]

looking at the UPSC CSAT question paper these days and its uncertainity, atleast practise PYQs to be confident in the exam. Best of luck with your preparation 👍 and please keep supporting. 🙏

[@kumardibya5519]

Option-A👍

[@aslamkmbr8284]

Answer is b

[@siddhantmishra07]

B option is the right answer

[@Sahildalal12]

Correct answer option (a)

[@anuradhayadav6525]

Mam how do we know ki 3 and 2 ki power mein 2 bada hai

[@civilashram]

Upsc 2022 (part-1) video me isey detail me discuss kiya gaya hai..... you can check it here.....
ua-cam.com/video/HwX9sZm7_nA/v-deo.html
Still, you have any doubt you can ask.

[@dhruvchoudhary4143]

waise logic sahi nahi diya aapne
give us a reason why 3^21 is less than other

[@PozinatiGaming]

B

[@nagendrasahani1031]

a2power 40

[@Dil-Sacha-hai]

How can u say that 3 raised to power 21 is smaller that 2 raised to power 40.

[@civilashram]

Looking at the options, (c) and (d) cannot be the answer as they both are equal to 2 raised to power 36, and option (a) is 2 raised to power 40, which is greater than 2 raised to power 36, so to find the smallest option, we are left with only 3 raised to power 21.
You can see the detailed solution here - ua-cam.com/video/HwX9sZm7_nA/v-deo.html

[@devilkings8096]

4 power 20 >3 power 21

[@mamunipradhan7667]

3^21 is the answer

[@playtester4346]

How!? Will you explain me please 🥺

[@susantadhar07]

Option b

[@pangrikarbipostudio2733]

Question d confused he ma'ma explain to me again plz

[@jibeswarkaibarta]

ancer =5

[@ガアラ-h3h]

No ur wrong 😑 look 4^18 = 64^15 8^11 = 64^10 so they aren’t the same which leaves us to do last question

[@abhinavpatil5008]

D

[@himadrikhanra7463]

3^21?

[@AlokKumar-bo1kd]

3/21 right hoga

[@anubhabsahamedicoMCK]

Log lekar kar sakte hae 🙂

[@aashujhavlog798]

8/12
Right answer

[@BG_plays762]

Kaha the gyani baba

[@pankajsingh100k]

Power ka LCM lekr bhe Kiya jata h

[@sr69684]

Please btaaein kaise

[@nehahugar.4138]

👍

[@manjunathaas2315]

Both c and d

[@ABHIRIDESPOINT]

2 power 40

[@Anshu_0091]

321

[@KHUSHALSINGH674]

c answer is currect

[@Asim-xz2hp]

Me bhi B choose kiya thaaa ab dekh ke sayad esa tukka exam me kan kar letaaa 😢😢😢🙏🙏🙏🙏🕉️🕉️🕉️🕉️

[@zaduzahidofficial5493]

Ans 1 2power40

[@PradeepChoudhary-kf4nw]

A

[@bitupanbhuyan5183]

2^48 =8^12

[@manishjaiswal4921]

Wrong

[@Jakeer543]

Look
A

[@Nishantpriyd98]

b

[@growthtime7950]

Ma'am ye konsa Application h jime aap padha rhe h.. please btao zara

[@civilashram]

Notability app hai

[@growthtime7950]

@@civilashram
Ma'am ye Google play store pe toh nhi .... other koi ho toh btaona

[@tggamer3951]

2⁴⁰ smallest number

[@JidankarKalita]

This is Halwa for Jee aspirants 😂

[@einstein-do3lw]

nhai yeh to ham bina pen ke karde

[@AjeetRajbhar.]

But jee questions are not halwa for jee students, every exam has there own difficulty level to check ability of aspirants.

[@Dhundhara]

For ssc also

[@AjeetRajbhar.]

@@Dhundhara me also ssc aspirant

[@1Thisthathesethose]

Bhai Csat hota hai koi bhi kr skta hai basic numerics hai yeh. Asli maal toh maths optional mei hai

[@msridharyadav4388]

2

[@Harsh-Aggarwal]

That's too easy mam😅

[@ananmahaleme-2533]

Logarithmic method se easy hota karne me !

[@Philiph-wu6xj]

8 power 4*8 power 4*8 power 4

[@Philiph-wu6xj]

4096 cube

[@Philiph-wu6xj]

4096 square* 4096

[@Philiph-wu6xj]

6+10*9+4*1000

[@Philiph-wu6xj]

*

[@Philiph-wu6xj]

6+10*9+4*1000

[@ITZ707MAYANK]

A🎉🎉

[@debroglie7538]

log lelo sabka easy

[@AbhishekKumar-rq6it]

Mam csat me sirf math hi questions rahta h kya

[@civilashram]

Nahi.... Reading Comprehensions bhi hote hain, jo ki Hindi aur English dono me rahte hain

[@adityakumarvermarollno19a78]

C hoga

[@suryanm8396]

Under which topic this question comes ??

[@civilashram]

This type of questions generally come under Number System

[@DpyadavYadav-pe7nj]

312

[@thephoenix7606]

b is wright ans

[@poketitive3318]

bhai csat itna ezy hai pata nahi tha,koibhi class 12/graduate solve karsakta hai
edit : english thora practise karna hoga

[@musicinbox2492]

Bhai quant or reasoning thoda eassy rahta hai kabhi kabhi

[@poketitive3318]

@@musicinbox2492 yeah but need to practise english tho

[@musicinbox2492]

@@poketitive3318 yaa it's need to much practice

[@naughtttyfelo4554]

​@@poketitive33182023 ka csat dekha tumne ...??

[@11-kanishkah94]

2⁴⁰

[@Islamic306Video]

3²¹ hoga

[@RiyazAlSheikh]

Hey maths apni problem tum khud hi solve kro m Jaa rha hu chatt s kudne!?

[@nasrinnaaz5590]

Aapke mobile mein charge nahi hain😂😂😂😂

[@Bajrang0647]

😂😂

[@pritiyadav5749]

Bbbb

[@BuddhadebShil-rx3le]

2*40-80..3*21-63..4*18-72..8*12-96.......so 3★21😂😂😂😂😂 simple hay be😂😂

[@defencemotivational5943]

A is correct 💯💯

[@rahultulla5871]

Ye concept is question ke liye suitable nahi hai

[@mdabdullah8242]

Aap direct into kar ke v pata laga shakti thi ….😂😂😂😂😂. Example 2*40 =80 , 21*3 = 63 😅

[@VivekJethva-l8r]

8¹² hai

[@VivekJethva-l8r]

Google me answer 8¹² hai

[@VivekJethva-l8r]

Yes

[@tejasdeshmane9056]

Ye konsa topic hai mam please batao??

[@civilashram]

Number system

[@narendrayadav99999]

Baccho ka sabal ussem me ro diye isme to pen ki bhi jaruri nahi thi ye to hare gao ke kisan bhi kar sakte he 😂😂😂😂

[@Diamond_edition]

This type of question is for class 10 😂

[@SadiaParvin-r9y]

C number

[@Ind31181]

Bta rhe ho BPSC or uper likha h UPSC

[@civilashram]

Haan.... kyunki ye question UPSC me poocha gaya tha..... aur isi Tarah ka question BPSC me bhi poocha gaya tha jo ki BPSC ke discussion wali video me solve kiya tha

[@Yuvi769]

Kya halwa Que hai Think Without ink se Krdiya "JEE ASPIRANT"

[@zapadiyasudhir3448]

8¹²

[@vivekchoudhary1692]

Chup chap 4 se divide krlo or remainder se krlo kya todrhe ho

[@civilashram]

Thanks for the alternate solution..... but can you please elaborate a little more?

[@MirrorByDivya]

Kaise ? Ap thora elaborate karo

[@noufan_d_haq]

@@civilashram it is asked smallest number so when dividing all with 10 only 3^21 comes with answer 1 so 1 is the smallest number. 21 divided by 10 = 1 remainder

[@auravlogs913]

Ye wrong h

[@DheerajKumar-so6dc]

😂😂😂😂😂😂

[@bhumish2294]

2×40=80
3×21=63
4×18=72
8×12=96
Smallest is 63 so the answer is 3×21

[@magiceyesgaming1817]

haha kuch bhi

[@bhumish2294]

@@magiceyesgaming1817 check kr le answer kuch bhi

[@magiceyesgaming1817]

@@bhumish2294 square karna hai

[@bhumish2294]

@@magiceyesgaming1817 answer dekh square circle mt bta mujhe

[@pratija....1085]

Thank you

[@abhishekshrivastava8802]

Option (a)

[@AshuAshok-k8i]

Option B

[@shreeheramb5273]

B

[@kailaskumbhar3645]

D

[@KavithaKulkarni-u3y]

A

[@Halleppa-kc1iw]

𝓐

[@errohanranjan]

Thanks