Select the number that can replace the question mark (?) in the following series.
35, 36, 40, 49, ? , 81
The series follows pattern as,
35 +Â $$1^2$$ = 36
36 +Â $$2^2$$ = 36 +Â 4 = 40
40 + $$3^2$$ = 40 +Â 9 = 49
49 +Â $$4^2$$ = 40 + 16= 56
56 + $$5^2$$ = 56 + 25 = 81
$$\therefore$$ The correct answer is option C.
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