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Source: — Problem Solving |
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by selango » Wed Aug 11, 2010 3:58 am
Since the length of n is 6 and having more prime factors,lets take the small prime factor 2.

n=2*2*2*2*2*X

we can sub X=2,n=64

X=3,n=96

X cannot be greater than 3 as n is a two digit positive integer.

n=2^5*x[x=2 or 3]

So 2 positive integers have length 6.
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by sheelanadh » Wed Aug 11, 2010 4:13 am
selango wrote:Since the length of n is 6 and having more prime factors,lets take the small prime factor 2.

n=2*2*2*2*2*X

we can sub X=2,n=64

X=3,n=96

X cannot be greater than 3 as n is a two digit positive integer.

n=2^5*x[x=2 or 3]

So 2 positive integers have length 6.
thank you very much ........is there any method to solve it.......
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