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If a and b are integers, what is the value of b ?

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Current Student
Status: It always seems impossible until it's done!!
Joined: 29 Aug 2012
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Location: India
WE: General Management (Aerospace and Defense)
If a and b are integers, what is the value of b ?  [#permalink]

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24 Jul 2014, 04:36
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84% (00:53) correct 16% (00:54) wrong based on 88 sessions

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If a and b are integers, what is the value of b ?

(1) ab = 32

(2) a^4 = b

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Joined: 02 Sep 2009
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Re: If a and b are integers, what is the value of b ?  [#permalink]

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24 Jul 2014, 04:40
If a and b are integers, what is the value of b ?

(1) ab = 32. This one is clearly insufficient: consider a=1 and b=32 or vise-versa.

(2) a^4 = b. Also clearly insufficient.

(1)+(2) Substitute the value of b from (2) into (1) a*a^4 = 32 --> a^5 = 32 --> a = 2 --> b = 32/a = 16. Sufficient.

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Re: If a and b are integers, what is the value of b ?  [#permalink]

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31 Oct 2017, 04:44
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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Re: If a and b are integers, what is the value of b ? &nbs [#permalink] 31 Oct 2017, 04:44
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