What does it mean for a number to be odd or even?
An even number is a multiple of 2. For example, 2, 4, 6, 8, and 10 are all examples of that. An easy way to tell if a number is a multiple of 2 is by looking at the last number. 1674 is an even number, because it ends with a 4, whereas 1673 does not end with 2, 4, 6...etc. making it an odd number.
The four numbers we are given are 533, 422, 1,022 and 874.
(Remember, if it ends in a 0, 2, 4, 6 or 8, it is a multiple of 2, which means it is even)
A. 533. 3 is not a multiple of 2, making it an odd number.
B. 422. 2 is a multiple of 2, making it an even number.
C. 1,022. 2 is a multiple of 2, making it an even number
D. 874. 4 is a multiple of 2, making it an even number
Therefore, A is the correct answer.