Question

consider the A.P. 4,11,18,25,32, ... . The term tn in this A.P. is 368 . find n.

Answer 1

nth term is
$a + (n - 1)d$
d = 11-4 = 7
So, 368 = 4 + 7(n-1)
n-1 = 52
n = 53....

Answer 2

I hope it will help u...