The modulus operator, often referred to as mod, is used to find the remainder of a division between two numbers. In the case of 4 mod 2, we are determining how much is left over when we divide 4 by 2.
When you divide 4 by 2, the result is 2 with a remainder of 0. This is because 2 goes into 4 exactly twice without any left over:
- 4 รท 2 = 2
- Remainder = 0
Thus, we conclude:
4 mod 2 = 0
In summary, when asking for 4 mod 2, you are essentially asking what remains after dividing 4 by 2, and the answer is 0.