Question

In an A. P. if a = 1, d = 3 then find tu​

Answer 1

$t_{n} = a + (n - 1)d$

So, your question is incomplete because there is no value of n u denoted.

U can use this formula ☺️

I hope it will be helpful for you ✌️✌️

Mark it as brainliest and

Fóllòw MË ☺️☺️