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GMAT Prep2?? (Primes)


 
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dferm
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PostPosted: Wed May 14, 2008 8:43 am    Post subject: GMAT Prep2?? (Primes) Reply with quote
Please Help..

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aatech
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PostPosted: Wed May 14, 2008 11:37 am    Post subject: Reply with quote
2*2*2*2*2*2 = 64

2*2*2*2*2*3 = 96

Only 2 options
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Carlo75
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PostPosted: Thu May 15, 2008 9:31 am    Post subject: Reply with quote
64= 2x2x2x2x2x2 so its length is equal to 6
96= 2x2x2x2x2x3 so its length is equal to 6

The last try to find another two digit number-with length equals to 6 is to substitute the last 2 of the number 96 with 3, the result is:
2x2x2x2x3x3= 144 that's a three-digit number. Therefore, the answer is TWO.
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