A is in decimal representation : http://www.mathramz.com/xyz/latexren...d6b4f14a65.png

Find all naturAls numbers. X , Y.. so that A divide by 25 .(Rofl)

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- Aug 4th 2009, 09:32 AMdhiabFind all naturAls numbers. X , Y..
**A is in decimal representation : http://www.mathramz.com/xyz/latexren...d6b4f14a65.png**

**Find all naturAls numbers. X , Y.. so that A divide by 25 .(Rofl)** - Aug 4th 2009, 09:45 AMGamma
Maybe I am misunderstanding something, I don't know.

so your number can be written:

where these are the decimal representation.

, so you need only worry about when which is clearly only 25 or 75.

so

- Aug 4th 2009, 09:49 AMGammafurther reflection
unless x and y can represent multiple digit numbers?

Then ends in a 2 or a 7}