Question

a sixteen sided number cube has the numbers 1 through 16 on each face. each face is equally likely to show after a roll. what is the probability that you will roll an even number or an odd prime number? round to the nearest thousandth

Answer 1

The possibilities of an even number are 2, 4, 6, 8, 10, 12, 14, and 16 .

The possibilities of an odd prime are 3, 5, 7, 11, and 13.

8 even numbers + 5 odd primes = 13 possibilities of success

out of 16 total possible outcomes.

Probability of success = 13/16 = 0.8125 = 81.25% .

Rounded to the nearest thousandth, it's 0.813 .