Let S(n) denote the sum of the first n terms of an arithmetic pro… | JEE Main 2024 Mathematics PYQ

MCQMediumJEE Main 2024 · 1 February, Shift 2Arithmetic Progression (AP)

Let $S(n)$ denote the sum of the first $n$ terms of an arithmetic progression. If $S(10) = 390$ and the ratio of the tenth and fifth terms is $15:7$ , then $S(15) - S(5)$ is equal to:

A
$800$
B
$890$
C
$790$
D
$690$

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