Q65. The sum of all rational terms in the expansion of $\left( 2 ^ { \frac { 1 } { 5 } } + 5 ^ { \frac { 1 } { 3 } } \right) ^ { 15 }$ is equal to :
(1) 3133
(2) 931
(3) 6131
(4) 633
Q65. The sum of all rational terms in the expansion of $\left( 2 ^ { \frac { 1 } { 5 } } + 5 ^ { \frac { 1 } { 3 } } \right) ^ { 15 }$ is equal to :\\
(1) 3133\\
(2) 931\\
(3) 6131\\
(4) 633