Question

In an A P 3,7,11,15 .... 18th term is ____​

Answer 1

Answer:

Answer is 54

Hope this helps

Answer 2

Answer:

3 , 7 , 11 , 15 , ......

a1 = 3

d= a2 -a1

d = 7 - 3

d= 4

a18 = a + (n -1) d

a18 = 3 + (18 -1) 4

a18 = 3 + (17)4

a18 = 3 + 68

a18 = 71

please mark my answer as brain list