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Number of positive divisors of 72 that
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Updated on: 20 Jun 2022, 06:23
Updated on: 20 Jun 2022, 06:23
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Question Stats:
100% (01:35) correct
0% (00:00) wrong based on 5 sessions
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Number of positive divisors of 72 that have 4 in the unit's place is
A. 1
B. 2
C. 3
D. 4
E. 5
Posted from my mobile device
A. 1
B. 2
C. 3
D. 4
E. 5
Posted from my mobile device
Re: Number of positive divisors of 72 that
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20 Jun 2022, 06:25
20 Jun 2022, 06:25
Expert Reply
The title of the question cannot be "number properties" must be the first word of the stem
Also set up the timer in a proper manner see here https://gre.myprepclub.com/forum/how-to-po ... tml#p32033
Also set up the timer in a proper manner see here https://gre.myprepclub.com/forum/how-to-po ... tml#p32033
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Re: Number of positive divisors of 72 that
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20 Jun 2022, 07:21
20 Jun 2022, 07:21
2
This is quite straightforward: just look at all the positive divisors of 72 and count the ones that end with 4.
These positive divisors are: 1, 2, 3, 4, 6, 12, 24, 36, and 72.
Among these, 4 and 24 end with 4.
The answer is B.
These positive divisors are: 1, 2, 3, 4, 6, 12, 24, 36, and 72.
Among these, 4 and 24 end with 4.
The answer is B.
