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# What happens if the user puts the first number as a number that is smaller than the second?

If the user types the first number as a number that is smaller than the second, it will generate a negative number. For example:

num1 = 10; num2 = 25;

Math.floor(Math.random() * (num1 - num2 +1)) + num1; // 10 - 15 + 1 = -13 + 10 = -3.

so eventually it does Math.random() to a number that is between 0 and -3 and says it is in the range of 10 to 25 for instance.