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GMAT Prep exponents

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GMAT Prep exponents

by sdotcruz » Sat Nov 27, 2010 5:41 am
this problem is from the Gmat Prep software. any advice?

For how many integers n is 2^n = n^2?

a. none
b. one
c. two
d. three
E. more than three

OA: C
Last edited by sdotcruz on Sat Nov 27, 2010 6:16 am, edited 1 time in total.
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by shovan85 » Sat Nov 27, 2010 6:03 am
sdotcruz wrote:this problem is from the Gmat Prep software. any advice?

For how many integers n is 2^n = n^2?

a. none
b. one
c. two
d. three
E. more than three

OA: B
2^n = n^2

This can be satisfied with TWO values of n.

2^2 = 2^2 thus n = 2
2^4 = 4^2 thus n = 4

Please check OA. IMO C
If the problem is Easy Respect it, if the problem is tough Attack it
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by sdotcruz » Sat Nov 27, 2010 6:18 am
shovan85: you are correct. i posted the wrong OA. C is the OA. Thank you.
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