G&T

Thursday, December 07, 2006

A ten digit number

Find the ten digit number which uses each of the digits 0 to 9 once and has the following properties:
the first digit from the left (the billions digit) is divisible by 1
the number formed by the first 2 digits from the left is divisible by 2
the number formed by the first 3 digits from the left is divisible by 3
the number formed by the first 4 digits from the left is divisible by 4
the number formed by the first 5 digits from the left is divisible by 5
the number formed by the first 6 digits from the left is divisible by 6
the number formed by the first 7 digits from the left is divisible by 7
the number formed by the first 8 digits from the left is divisible by 8
the number formed by the first 9 digits from the left is divisible by 9
the number itself is divisible by 10.

What is the number?

Tomorrow

I hope we might be able to get some answers to our questions and also show those that haven't managed to get on to the blog how to do it.

Hopefully we will also have time to start a new question.

Mr Goodman