Q. 104.2( 9 Votes )

How many terms of

Answer :

Let the number of terms in the given A.P. be n; first term, a = 27; common difference, d = 24 – 27 = -3

Sum of n terms, Sn = 0





n(57 – 3n) = 0


n = 0 or n = 13


But we know that number of terms cannot be zero.


Thus, number of terms, n = 19

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