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Previous Year Questions on Average (in Hindi)
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This lesson brings solution to three different kinds of questions out of which one has appeared in CPO 2015 and CGL Tier 2 2014. Dhiraj solves it explaining the methodology in detail. Solving previous year questions has been a strategy that has tried and tested for long now.

U
thanks sir
bhai ye background me chan chan ki awaz kyun aa rhi h
NC
use good microphone
Sir I can't understand question no. 10. I am a bengali. In this question you have used some hindi words I don't know the meaning of. I know hindi, but not so well to know all the meanings. Would you plz explain it to me in english?
when question says consecutive odd number avg, always take avg as middle no and then 25 27 29(middle no) 31 33 and when next 3 odd no are also included 35 37 39 , Now I guess it is easy for u to understand.
Yeah. Thank you so much. ????
how come 6+8+10?????
Conversely in Q.9 After finding weight of E (=71kg) We see: Sum of weights of (ABCD) = 80x4 Sum of wights of BCDE= 79x4 So, ABCD-BCDE= 4 -> A - E = 4 Thus, A = 4 + E = 4 + 71 = 75
1. TRICKS TO SOLVE QUESTIONS OF "AVERAGE" -DHIRAJ SINGH CHAUHAN

2. ABOUT ME B.Sc.(Hons.) from BHU Varansi Income tax Inspector, 27th Rank in CGL 2015 . Tier 1-150/200 Tier 2-347/400 Interview-60/100 . Cracked CPO,CHSL,CDS,AFCAT, IB-ACIO etc Course Fee- Contribute . Follow me on at: https://unacademy.in/user/dhirajaryal

3. CPO 2015 and CGLTier 2 201.4 Q.9-Average weight of 3 persons A, B and C is 84 kg. If D joins them, average weight becomes 80 kg. If E whose weight is 3 kg more then D replaces A, then average weight of B,C,D and E becomes 79 kg. find the weight of A in kg. Phr wligh Ahn kagerage weight of k.CD and E becomes re kg find . (ii) 72 i) 75 (iv) 80

4. 80 888o 80-12-68 o-, 12 = 68 = 68 ra E- 68 +3 = 71 B+C+ 68+71

5. Another variety to puzzle you Q-Find the average of first 100 natural numbers. 1 So average= (1+100)/2 = 50.5 The same will apply for even or odd numbers also. But if average of squares/cubes of natural numbers is asked, then you will have to use conventional formula= Sum of Data/number of data

6. Hard Nuts . Q.10 Average of 5 consecutive odd numbers is 29, If next 3 odd 8 2 numbers are also included, then find the new average. (1) 30 (2) 32 (3) 31 (4) 33

7. 25 27 29 31 33 35 37 39 31 33 35 1 35 Average Avera Suiplus = Ne Average = 2.9 1