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Question
What number should come next?
75, 291, 416, 480, 507, __
Options:
A .  515
B .  532
C .  511
D .  521
E .  508
Answer: Option A


75+216, 291+125,
416+64,
480+27, 507, __.The differences are cubes of consecutive natural numbers in decreasing order.Hence, the next number in the series in 507 + 23 = 515.



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