There are 16 number-tiles in a jar, each marked with a different number from 1–16. if you pull out one tile at random, what is the probability that the number you pull will be an even number or a prime number?
So through numbers 1-16 the even numbers are 2, 4, 6, 8, 10, 12, 14 and 16 the prime number 1-16 are 2, 3, 5, 7, 11, and 13 so in total of even and prime numbers it is 13 so the probability of you pulling out an even or prime number is 13/16
