Question

The n^th term of the A.P. `−1/3, 2/3, 5/3, 8/3,` ... is ______.

विकल्प

• 3n − 4

• `n − 4/3`

• `(n − 2)/3`

• `(n − 4)/3`

Answer 1

The n^th term of the A.P. `−1/3, 2/3, 5/3, 8/3,` ... is `bbunderline(n − 4/3)`.

Explanation:

For the given A.P., the first term is a = `− 1/3` and the common difference is. Using the formula an = a + (n − 1)d, 

we get `a_n = −1/3 + (n − 1)`.

So, a_n = n − `4/3`