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If the mth term of an A.P. be 1//n and nth term be 1//m then show that its ( m n )th term is 1.

The first term of a sequence is 1, the second is 2 and every term is the sum of the two preceding terms.The n^(th) term is.

The first term of a sequence is (1)/(2) and the second term is (1)/(4) . Each term thereafter is the sum of the all the terms before it , If the n^(th) term is the first term of the sequence that is an integer , what is the value of n ?

Find the 9th term of the G. P. 2, 1, (1)/(2) ,….

Find the 30th term of the sequence: 1/2 , 1, 3/2 ,….

4th term of an A.P. is equal to 3 times its first term and 7th term exceeds twice the 3rd term by 1. Find the first term and the common difference.

The eighth term of an AP is half its second term and the eleventh term exceeds one-third of its fourth term by 1. Find the 15th term.

The eighth term of an AP is half its second term and the eleventh term exceeds one-third of its fourth term by 1. Find the 15th term.

If first term of a GP is a, third term is b and (n+1)th term is c. The (2n+1)th term of a GP is