Question

# The 2nd and 50th term of an A.P is 49 and 89 respectively. Find the sum of first 51 terms of the given A.P.

A

3158

B

3519

C

3258

D

3458

Solution

## The correct option is C 3519 Let the first term and the common difference of the given A.P. be a and d respectively. a+d = 49 a+49d =89 Sum of first 51 terms(51/2)(2a+50d)=3519

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