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  Discussion about math, puzzles, games and fun.   Useful symbols: √ ∞ ≠ ≤ ≥ ≈ ⇒ ∈ Δ θ ∴ ∑ ∫ π -

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#1 2012-10-25 14:30:31

jacks
Guest

total natural no.

Total no. of  natural no. from 1 to 1000 in which non of their digits is repeated

#2 2012-10-25 15:39:13

bobbym
Administrator

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Re: total natural no.

Hi jacks;

I am getting 738 as the answer.


In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

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