Question
Question: The sum of the series 2, 5, 8, 11, ……….. is 60100, then n is...
The sum of the series 2, 5, 8, 11, ……….. is 60100, then n is
A
100
B
200
C
150
D
250
Answer
200
Explanation
Solution
2, 5, 8 ……………… is an A.P.
with a = 2, d = 3
Sn ̃ 60100 = 
[2(2) + (n – 1)3]
So, n = 200