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Question

Question 19
The value of 4(81)2 is

A) 19
B) 13
C) 9
D) 181

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Solution

The answer is A.
4(81)2=41(81)2=1(81)2/4=1(81)1/2[man=an/m]=1(92)1/2=192/2=19[(am)n=amn]

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