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Question
Directions(6-10): What should come in place of the question mark (?) in the following questions ?

(6*6*6*6*6*6)4 * (6*6*6*6)5 / (6*6)7 = (36)7
Options:
A .  15
B .  21
C .  18
D .  27
E .  None of these
Answer: Option A


(363)4 * (362)5 / (36)7 = (36)?
=> 3612 * 3610 / 367 = 36?
=> 3612+10-7 = 36?
=> 3615 = 36?
=> ? = 15
[(am)n = amn
am * an = am+n
am / an = am-n]



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