Question

Find the 15th term from end for AP, 10, 15, 20, 25, 30,..., 1000.

Answer 1

Dear Student,

Answer: 80

Solution: A.P. = 10, 15, 20, 25, 30,..., 1000.

a = 10

d = 15-10 = 5

n = 15

n th element = a + (n-1) d

15th term = 10 + (15 -1) 5

= 10 + (14)( 5)

= 10 +70

= 80

Hope it helps you.