Question:The total number of prime factor in the expression `(4)^11 xx (7)^5 xx (11)^2` is : 

A 7 
B 18 
C 29 
D 110 

+ Answer
C 

+ Explanation
`4^7 xx 7^5 xx 11^2 = (2 xx 2)^11 xx 7^5 xx 11^2`
                                   =`2^11 xx 2^11 xx 7^5 xx 11^2`
                                   =`2^22 xx 7^5 xx 11^2`.

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Zinia Islam

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