Question

Find the 8th term from the end of the A.P. 7, 10, 13, ..., 184.

Answer 1

Answer:

The 8th term from the end of the A.P is 163

Step-by-step explanation:

Given :  

A.P. 7, 10, 13, ..., 184.

Let 'l' be the last term of an A.P

Common Difference , d = 10  - 7  = 3  

Last term , l = 184

nth term from the end = l - (n - 1)d

8th term from the end = l - (n - 1)d

8th term from the end = 184  - (8 - 1) × 3

8th term from the end = 184 - 7 × 3

8th term from the end = 184 - 21

8th term from the end = 163

Hence, the 8th term from the end of the A.P is 163

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Answer 2

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a=184

d=3

t8=184-(n-1)d

=184-21

=163

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