95 ÷ 729 x 81 ÷ 92 x 6561 = 9? X 9
A. 5
B. 3
C. 4
D. 2
E. None of these
Sol:
95÷ 729 x 81 ÷ 92 x 6561 = 9? X 9
=> 95÷ 93 x 92÷ 92 x 94 = 9? X 9
=> 9(5 – 3 + 2 – 2 + 4) = 9(? + 1)
=> 96 = 9(? + 1)
=> 6 = ? + 1
=> 6 – 1 = ?
=> 5 = ?
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