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If x and y are positive integers, what is the value of x + [#permalink]
 30 Oct 2008, 18:34
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If x and y are positive integers, what is the value of x + y?
(1) 2 raised to x * 3 raised to y = 72
(2) 2 raised to x * 2 raised to y = 32
Answer with explanation. I will provide OA shortly
Last edited by amitdgr on 31 Oct 2008, 07:05, edited 1 time in total.
corrected the typo
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Senior Manager
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A
1. 2^x*3^y = 2^3*3^2
x = 3, y =2 - Suff
2. 2^(x+y) = 2^5
x+y =5 - Insuff
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Manager
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That's not the answer - but thank you for the explanation of the first sufficiency. The OA is D.
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Manager
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Can you pls explain why the answer is D ? I get A
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SVP
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tharunv, can you please check if the question does not ask for the value of (x+y). In the present form of the question, answer should be A only.
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Manager
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Sorry guys - my mistake - it is "what is the value of x + y" - a typo on my part - hope this clarifies things...
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