Question

Find the 7th term from the end of an AP : 7, 10, 13, ………. 184.​

Answer 1

★ To calculate nth term from end, use the formula, nth term from last = l - (n-1)d

Here,

l = 7

d = 10 - 7 = 3

So,

7th term from last = 184 - (7-1)3

= 184 - 18

= 166

Answer 2

Answer:

Answer:–

• The 7th term from the end is 166.

Given:–

The series of AP is 7,10,13,.......184

To find:–

• The 7th term from the end of an AP.

Solution:

The series is,

7,10,13,..........,184

Here,

$a = 7$

$d = a2 - a1 = 10 - 7 = 3$

$last \: term = 184$

Since,

$the \: nth \: term \: from \: the \: end = l + (n - 1)( - d)$

So,

$the \: 7th \: term \: from \: the \: end = 184 + (7 - 1)( - 3)$

$= 184 + (6)( - 3)$

$= 184 - 18$

$= 166$

Hence,

The 7th term from the end of an AP=166