Question

Find the nth term of this number sequence 2, 4, 6, 8,

Answer 1

`a_n = 2n`

Explanation:

Given sequence is: 2, 4, 6, 8,.....

Here, a = 2, d = 4 - 2 = 2

To find:
`a_n`

`a_n = a + (n - 1)d \\ \\ \therefore \: a_n = 2 + (n - 1)2\\ \\\therefore \: a_n = 2 + 2n -2\\ \\\therefore \: a_n = 2n \\ \\`