Question

nth term of an A. P is given by 5n-3.find the A. P

Answer 1

An = 5n - 3
a1 = 5(1) - 3
5 - 3
= 2
a2 = 5(2) - 3
= 10 - 3
= 7
a3 = 5(3) - 3
= 12
so the AP is 2 , 7 , 12 ,.....

Answer 2

Answer:

2, 7, 12, 17, 22, ...

Step-by-step explanation:

Since nth term is given by 5n - 3,

a1 = 5 ( 1 ) - 3 = 5 - 3 = 2

a2 = 5 ( 2 ) - 3 = 10 - 3 = 7

a3 = 5 ( 3 ) - 3 = 15 - 3 = 12

Hence, here,

a = 2, d = 7 - 2 = 12 - 7 = 5

Thus, AP = 2, 7, 12, 17, 22, ...