Generating a random number is often useful when developing applications in AS3 (more so when developing games). AS3 has a built in random number method as a part of it's Math class which generates a number less than 1 and greater than or equal to 0. We can use this to create a useful function for generating a random number between two other numbers.
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Awesome! If you're looking for an awesome suite of Utilities. The Casa Library (CasaLib.org) rocks! For example, they offer your example NumberUtil.randomIntegerWithinRange( minimum, maxium ) as well as many variations such as finding an average, rounding up/down, etc. http://as3.casalib.org/docs/index.html?http://as3.casalib.org/docs/package-orgcasalibmath.html#Classes