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Question 1
How many terms of the A.P. – 6, 
, – 5, ... are needed to give the sum –25?
, – 5, ... are needed to give the sum –25?
Question 2
If nth term of the G.P., 2,8,32, ... up to n terms is 131072 . Then n is
Question 3
If a, b and c are the A .M., G. M. and H.M. of two number, then
Question 4
Find the sum upto 100 terms of the series whose nth term is n (n+3).
Question 5
If the sum of n terms of an A.P. is 
, where P and Q are constants, then find the common difference.
, where P and Q are constants, then find the common difference.
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Apr 26CDS & Defence
