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Re: hard prep question

by jayhawk2001 » Sun Apr 22, 2007 9:40 pm
jamesk486 wrote:x=0.000999999, then what is the smallest number that n can be in x*10^n>100 ??

the answer is 6..confused..
For n=5, x*10^5 = 99.999 which is less than 100.

For n=6, we get 999.999 which is > 100.

Hence 6.
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by Cybermusings » Sun Apr 22, 2007 11:06 pm
x=.000999999
When is x*(10^n)>100
.000999999*(10^5)=99.9999 which is less than 100
Hence we have to multiply it by 10 one more time
So .000999999*(10^6)=999.999 which is greater than 100
Hence minimum value of n has to be 6
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