The 15th term of an arithmetic progression is ,-8 and the first term is 20

MATHEMATICS · Single correct · CBSE · Mathematics · Arithmetic Progressions · Arithmetic Progressions

Problem

The 15th term of an arithmetic progression is \,-8 and the first term is 20. Find the sum of the first 15 terms. (a)

98

(b)

75

(c)

90

(d)

104