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Number of positive integer divisors of 30
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23 Jan 2018, 12:20
23 Jan 2018, 12:20
Expert Reply
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Question Stats:
92% (00:41) correct
7% (00:32) wrong based on 113 sessions
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Quantity A |
Quantity B |
Number of positive integer divisors of 30 |
Number of positive integer divisors of 18 |
A) Quantity A is greater.
B) Quantity B is greater.
C) The two quantities are equal.
D) The relationship cannot be determined from the information given.
Kudos for right answer and explanation
Re: Number of positive integer divisors of 30
[#permalink]
24 Jan 2018, 02:52
24 Jan 2018, 02:52
Quantity A is greater. As the number of integer divisors of 30 are more
Re: Number of positive integer divisors of 30
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24 Jan 2018, 10:56
24 Jan 2018, 10:56
I usually start these type of questions (asking for divisors of relatively simple numbers) by trying to divide the quantities by numbers starting from 1.
Write down all the corresponding factors.
For Quant A:
30/1 = 30 (two divisors)
30/2 = 15 (two more)
30/3 = 10
30/4 is not possible
and so on.
--> A is bigger with 6 divisors versus B with 3 divisors
Write down all the corresponding factors.
For Quant A:
30/1 = 30 (two divisors)
30/2 = 15 (two more)
30/3 = 10
30/4 is not possible
and so on.
--> A is bigger with 6 divisors versus B with 3 divisors
