Question

The 24th term of the A.P. $$-1, 3, 7, 11, .....$$ is ______.

विकल्प

• $$83$$

• $$87$$

• $$91$$

• $$95$$

Answer 1

The 24th term of the A.P. $$-1, 3, 7, 11, .....$$ is 91.

Explanation:

Here $$a = -1$$ and $$d = 4$$, so $$\mathrm{T}_{24} = -1 + 23(4) = 91$$.