Question

For an A.P., if a=2 & d=2.5, then which is the seventh term ?

17

15

13

11​

Answer 1

$\mathcal{\huge{\underline{\underline{\underline{\boxed{Answer}}}}}}$

The answer is (a) 17.

$\mathcal{\huge{\underline{\underline{\underline{\boxed{Solution}}}}}}$

Given : a = 2 d = 2.5

We know that ,

An = a +( n - 1 ) d

A17 = 2 + ( 7 - 1 ) 2.5

A17 = 2 + ( 6 ) 2.5

A17 = 2 + 15

A17 = 17

This is your Solution. ....

Answer 2

Correct Option :-

17 ( a )

Explanation

Given : a = 2 d = 2.5

We know that ,

An = a +( n - 1 ) d

A17 = 2 + ( 7 - 1 ) 2.5

A17 = 2 + ( 6 ) 2.5

A17 = 2 + 15

A17 = 17