If the sum of the first 15 terms of the series ( 34 )^3 + (1 12 )^3 + (2 14 )^3 + 3^3 + (3 34 )^3 + is equal...

Question

If the sum of the first 15 terms of the series ( 34 )^3 + (1 12 )^3 + (2 14 )^3 + 3^3 + (3 34 )^3 + is equal to 225k, then k is equal to:

Accepted Answer

(C)

JEE Main 2019 Mathematics question