Question

if a and D are the first term and common difference of an A.P
then the 8th term is​

Answer 1

Answer:

Theorem:-Let a be the first term and d be the common difference of an AP. Then its nth term and general term is given by an=a+(n-1)d.

Answer 2

The 8th term is a+7D.

Given:

First term=a

Common difference=D

To find:

The 8th term

Solution:

We can obtain the required term by using the following formula.

The A.P.'s 8th term, a8= first term +(8-1)×common difference

We will substitute the given values in the formula and get the value of the required term.

Using the values, we get

a8=a+(8-1)D

a8=a+7D

Therefore, the 8th term is a+7D.

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