If $2,5,8,11, \ldots$. is an A.P, whose $1^{ ext {st }}$ term is 2 and C.D. is 3 , then $t_n=$ $\_\

Question

If $2,5,8,11, \ldots$. is an A.P, whose $1^{	ext {st }}$ term is 2 and C.D. is 3 , then $t_n=$ $\_\_\_\_$

Professor PC Thomas Classes · Answer

$t_n = a + (n-1)d = 2 + (n-1)3 = 3n - 1$.