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BITSAT 2021
MCQ (Single Correct Answer)
+3
-1

Sum of n terms of the infinite series

1.32 + 2.52 + 3.72 + ..... $$\infty$$ is

A
$${n \over 6}(n + 1)(6{n^2} + 14n + 7)$$
B
$${n \over 6}(n + 1)(6{n^2} + 14n + 5)$$
C
$${n \over 6}(n + 1)(2n + 1)(3n + 1)$$
D
$$4{n^3} + 4{n^2} + n$$
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