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16 Dec 2021, 07:00
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E
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Difficulty:
15%
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Question Stats:
76% (00:58) correct
24%
(01:24)
wrong
based on 318
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12 Days of Christmas GMAT Competition with Lots of Fun
\(72^4\) has how many positive factors?
A. 5
B. 20
C. 70
D. 96
E. 117
\(72^4\) has how many positive factors?
A. 5
B. 20
C. 70
D. 96
E. 117
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General Discussion
16 Dec 2021, 07:17
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Asked: \(72^4\) has how many positive factors?
\(72 = 2^3*3^2\)
\(72^4 = 2^12*3^8\)
Positive factors of \(72^4 = 2^12*3^8\) = (12+1)(8+1) = 13*9 = 117
IMO E
\(72 = 2^3*3^2\)
\(72^4 = 2^12*3^8\)
Positive factors of \(72^4 = 2^12*3^8\) = (12+1)(8+1) = 13*9 = 117
IMO E
