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Re: If a^3 + b^2 = 73, then which of the following are the possi [#permalink]
Is there a faster way than trying to substitute numbers to solve this one? I got the answer but it took some time
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Re: If a^3 + b^2 = 73, then which of the following are the possi [#permalink]
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IlCreatore wrote:
Is there a faster way than trying to substitute numbers to solve this one? I got the answer but it took some time


This is not a GRE question. Ideally in this case we have to find numbers which sattisfy this equation and the uderlying assuption seems to be that this is a natural number.

So we take a= 1, 2, 3, ..... and see where we get a natural number for b.

At a=4 we have b=3.

However its not mentioned a and b are natural numbers so this equation can have many soutions.
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