Which number will replace the question mark (?) in the following series? 729, 243, ?, 27, 9, 3
Which of the following numbers will replace the question mark (?) in the given series?

Which number will replace the question mark (?) in the following series? 729, 243, ?, 27, 9, 3

A.            54

B.            78

C.            81

D.            36

Sol:

Pattern follows here is 1/3 latter number is of former number.

Required number =243/3

=81
Reasoning
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