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jimmyjamesdonkey
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If a is divided by 7 and by 18, an integer results. Is a/42 21 Feb 2008, 11:59
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If a is divided by 7 and by 18, an integer results. Is a/42 an integer?

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If a is divided by 7 and by 18, an integer results. Is a/42 21 Feb 2008, 12:05
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If a is divided by 7 and by 18, an integer results. Is a/42 an integer?
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yes, because a=k*2*(3^2)*7 and 42 = 2*3*7
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If a is divided by 7 and by 18, an integer results. Is a/42 21 Feb 2008, 12:13
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a is divisible by 18 and 7 implies a is divisible by all prime factors of 7 and 18

prime factorization of 18 = 2*3*3
prime factorization of 7 = 7

a is divisible any number that can be formed by these factors: 2*3*3*7

prime factorization of 42: 7*2*3



a is divisible by 42
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If a is divided by 7 and by 18, an integer results. Is a/42 21 Feb 2008, 12:18
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Affirmative. Good job.
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If a is divided by 7 and by 18, an integer results. Is a/42 22 Feb 2008, 00:41
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Yes. Prime factor table for a:
a - 7,2,3,3

In order a / 42 = integer, it require prime factors:2,3,7.Since we have all prime factors a gets divided by 42
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If a is divided by 7 and by 18, an integer results. Is a/42 12 Jan 2021, 09:02
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Automated notice from GMAT Club BumpBot:

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