Question

what is the tenth term of 11 9 7 5 3 1

Answer 1

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Given :

• Series : 11, 9, 7, 5, 3, 1

To Find :

• Tenth term of the series.

Solution :

Given series is in Arithmetic progression (AP)

AP : 11, 9, 7, 5, 3, 1

Here,

First term, a = 11

common difference, d = 9 - 11 = -2

n = 10

Let, tenth term be a10.

nth term of an AP, an = a + (n - 1)d

$\implies$ a10 = 11 + (10 - 1)-2

$\implies$ a10 = 11 - 18

$\implies$ a10 = -7

Therefore, 10th term = -7.