The sum of the first 5 terms of an arithmetic progression is 25 and the sum of the…

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

Problem

The sum of the first 5 terms of an arithmetic progression is 25 and the sum of the first 10 terms is 100. Which of the following ordered pairs

(a,\,d)

represents its first term and common difference? (a)

(0,\,2)

(b)

(1,\,2)

(c)

(3,\,1)

(d)

(-1,\,3)