Question

Q7. What is the sum of the first 50 terms of the
series 2 +17 +32 +47 +...?​

Answer 1

18475

Explanation:

given sequence is in A.P.

sum of n terms of an A.P. is =

`(n)/(2) * (2a + (n - 1) * d)`

here n = 50

a = 3

d= 15

ans is 18,475