Question

The nth term of 1, 3, 5, 7, ... is

Answer 1

The terms increase by 2 in each sequence starting from 1. Therefore:

A possible sequence is:

an = 2n - 1

Let's verify it:

a1 = 2(1) - 1 = 2 - 1 =1

a2 = 2(2) - 1 = 4 - 1 = 3

a3 = 2(3) - 1 = 6 - 1 = 5

a4 = 2(4) - 1 = 8 - 1 = 7

..