Which of the following is an example of an impossible event? a. rolling an odd or even number on a number cube b. rolling a factor of six on a number cube c. rolling a number less than one on a number cube

The answer is C.

Even and odd numbers are able to be rolled on a number cube. 1, 3, and 5 are the odd numbers and 2, 4, and 6 are the even numbers. This rules out A.

Factors of 6 are able to be rolled on a number cube. The factors of 6 are 1, 2, 3, and 6. This rules of B.

This leaves the answer C. There are no numbers less than 1 on a number cube, so rolling it would be impossible.