The expression 4 mod 2 refers to the modulus operation, which finds the remainder when one number is divided by another. In this case, when you divide 4 by 2, the result is 2 with no remainder. Therefore, the remainder is 0.
To break it down:
- 4 divided by 2 equals 2.
- 2 multiplied by 2 gives you 4, so there’s no leftover part or remainder.
Thus, 4 mod 2 = 0.