To determine if a number is odd or even in Excel, you can use the MOD function. This function returns the remainder after a number is divided by a divisor. For example, the formula =MOD(5,2) returns the value 1 because 5 divided by 2 equals 2 with a remainder of 1.
If you want to test if a number in cell A1 is odd or even, you can use this formula:
=MOD(A1,2)
If the result is 0, the number is even. If the result is 1, the number is odd.