Check whether -150 is a term of the A.P. 11, 8, 5, 2, …

Given that

The given series, A.P. 11, 8, 5, 2..

Find out

If -150 is a term of the given AP

Solution

The first term, a = 11

Common difference, d = a2a1 = 8−11 = −3

Let −150 be the nth term of this A.P.

We know that

an = a+(n−1)d

-150 = 11+(n -1)(-3)

-150 = 11-3n +3

-164 = -3n

n = 164/3

Clearly, n is not an integer but a fraction.

Hence, – 150 is not a term of this A.P.

Was this answer helpful?

  
   

0 (0)

Upvote (0)

Choose An Option That Best Describes Your Problem

Thank you. Your Feedback will Help us Serve you better.

Leave a Comment

Your Mobile number and Email id will not be published. Required fields are marked *

*

*

BOOK

Free Class

Ask
Question