Question

Find the nth term -1 3 7 11

Answer 1

Answer:

1, 3, 7, 11,........

A. P. = 3 , 7, 11 ,......

IN THE ABOVE A. P.

COMMON DIFFERENCE d= 4

FIRST TERM a = 3

Nth term in the above A. P is

$a_{n} = a + (n - 1)d \\ a_{n} = 3 + (n - 1)(4) \\ a_{n} = 3 + 4n - 4 \\ a_{n} = 4n - 1$

SO NTH TERM IN THE SERIES 1,3,7,11

IS 4n -1