Question

Fid nth term of an ap whose first term is 'a' and common difference is 'd'

Answer 1

$a_{n} = a(n - 1)d$
Hence it is the formula.
HOPE IT HELPS YOU.☺️☺️☺️

Answer 2

$a = (a + n - 1)d \\ \: \: \: \: n$
this is the formula also
hope this helps you