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Number of positive divisors of 72 that have 4 in the units place is
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06 Aug 2024, 01:36
06 Aug 2024, 01:36
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Question Stats:
66% (01:12) correct
33% (01:37) wrong based on 6 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
A. 1
B. 2
C. 3
D. 4
E. 5
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Free Materials for the GRE General Exam - Where to get it!!
Shorter GRE - Preparing for the Quantitative Reasoning Measure
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Free Materials for the GRE General Exam - Where to get it!!
Shorter GRE - Preparing for the Quantitative Reasoning Measure
Shorter GRE - Preparing for the Verbal Reasoning Measure
Number of positive divisors of 72 that have 4 in the units place is
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09 Aug 2024, 06:55
09 Aug 2024, 06:55
1
72 = 2^3 x 3^2
Possible arrangements
1
2
2 x 2 = 4
2 x 2 x 2 = 8
3
3 x 3 = 9
2 x 3 = 6
2 x 9 = 18
4 x 3 = 12
4 x 9 = 36
8 x 3 = 24
8 x 9 = 72
We can see that there are 2 of such
Answer B
Adewale Fasipe, Lagos Nigeria.
Possible arrangements
1
2
2 x 2 = 4
2 x 2 x 2 = 8
3
3 x 3 = 9
2 x 3 = 6
2 x 9 = 18
4 x 3 = 12
4 x 9 = 36
8 x 3 = 24
8 x 9 = 72
We can see that there are 2 of such
Answer B
Adewale Fasipe, Lagos Nigeria.
Re: Number of positive divisors of 72 that have 4 in the units place is
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09 Aug 2024, 09:18
09 Aug 2024, 09:18
Expert Reply
