For an arithmetic progression

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

Problem

For an arithmetic progression,

S_n

denotes the sum of its first

n

terms. The sum of the terms from the

p

th to the

q

th term (both inclusive) is given by (a)

S_q-S_p

(b)

\dfrac{S_q-S_{p-1}}{q-p+1}

(c)

S_q-S_{p-1}

(d)

S_{q-1}-S_{p-1}