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by xilef » Wed Apr 23, 2008 11:40 am
4^11=2^22

10^n = 2^n(5^n)

so

5^21 * 2^22 = 2^(n+1) * 5^n

n=21
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nice approach

by resilient » Sun Apr 27, 2008 1:09 am
Xilef,

Excellent approach. I was stumped and maneuvering in ways that made this much harder than it should be. WHat are your golden rules on this topic that we can all learn from?
Appetite for 700 and I scraped my plate!
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by Sunny22uk » Sun Apr 27, 2008 8:04 pm
This question involves the concept of x^n X y^n =(xXy)^n
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