11th Economics Term-1 real paper 13 December 2021 | PSEB Term-1 exam Eco | GAURAV CROOKS +1 #pseb

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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 ?

The sum of the first six terms of an arithmetic progression is 42. The ratio of the 10th term to the 30th term of the A.P. is (1)/(3) Calculate the first term and the 13th term.

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.

If the coefficients of (2r + 1)th term and (r + 2)th term in the expansion of (1 + x)^(48) are equal,find r .

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

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

The sum of first 9 terms of an A.P. is 162. The ratio of its 6th term to its 13th term is 1:2 . Find the first and 15 t h term of the A.P.