Question

The first term of an A.P. is $5$ and its common difference is $-3$. Find the ${11}^{th}$ term of an A.P.

Answer 1

$t_n=a+(n-1)d$ where n = 11, a = 5, d = - 3
$\therefore t_{11}=5+\left(10\right)\times (-3)=-25$