Q. 94.8( 11 Votes )

How many terms of

Answer :

It is given in the question that,

1st term, a = 18


Common difference, d = 16 – 18 = -2


Also, Sn = 0


We know that,



0 = n (19 – n) = 0


n = 0 or n = 19


As total number of terms cannot be zero therefore n will be equal to 19


Hence, number of terms, n = 19

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