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JavaScript JavaScript Basics (Retired) Working With Numbers The Random Challenge Solution

Used a different solution that seems to work - am I wrong?

This is the code I used - the var randomNumber part I used seems simpler and easier than what the instructor used and seems to work just fine, but perhaps there's something I'm missing. Math is not my strong suit, alas. Any insight you can offer would be great!

var input = prompt('Give me your low number.');
var lowNumber = parseInt(input);
var input2 = prompt ('Now give me your high number.');
var highNumber = parseInt(input2);
alert('Thanks! Hit the ok button to get your random number.');
var randomNumber = Math.floor(Math.random () * highNumber) + lowNumber;
document.write(randomNumber + ' is your random number between ' + lowNumber + ' and ' + highNumber + '.');