Question

If the first term of an AP is − 3 and common difference − 2, then the seventh term is ______.

Options

• −9

• 9

• −17

• −15

Answer 1

If the first term of an AP is − 3 and common difference − 2, then the seventh term is −15.

Explanation:

Given,

a = − 3 and d = − 2

We have to find the seventh term, i.e., a₇

∴ a₇ = a +(7 − 1)d

= (−3) + 6 (−2)

= −3 − 12

= − 15