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Exponents

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naveenhv
 Post subject: Exponents
 Post Posted: Mon Apr 25, 2011 12:24 pm 
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Forum Guests


Posts: 22
For how many integers n is 2^n = n^2 ?

a. None
b. One
c. Two
d. Three
e. More than three
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terence.battle1
 Post subject: Re: Exponents
 Post Posted: Mon Apr 25, 2011 12:47 pm 
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Course Students


Posts: 33
I'm sure it's probably not right.. but I simply looked at the values are realizing that if you raise the 2 to anything... it has to be equal to N squared. So the value of 2 works as well as the value of 4. This would yield the answer of C per your table. Other values may exist this was just my immediate response without having a firm way of approaching.
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RonPurewal
 Post subject: Re: Exponents
 Post Posted: Wed Apr 27, 2011 4:53 am 
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ManhattanGMAT Staff


Posts: 7146
per the forum rules, please search the forum before you post!
you posted 10 different threads without searching today; if you continue to do so, we'll just delete them.

look here:
for-how-many-integers-n-is-2-n-n-2-t5030.html

and here:
2-n-n-2-t9364.html
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