Numeric range with regular expression

Question

I need a regular expression to find a number in the range [40010-40100]. I tried with this 40[0-1][0-9][0-9] but it doesn't work. Could someone help me?

Answer 1

This should do : (40100|400[1-9][0-9])

Answer 2

Here you go...

40(0([1-9][0-9])|100)