Try again
Correct
Try again
Try again
The sequence is 1, 3, 5, 7, .......
The first term a = 1 , difference d = 3 - 1 = 2.
The nth term an = a + (n-1)d
= 1 + (n-1)2
=1 + 2n - 2
=2n - 1.
Answer : (b)