A six sided number cube is to be rolled 30 times how many times do you expect to roll an even number

Answer 1

Since a six sided number cube has 3 even numbers (2, 4, 6) out of 6 possible outcomes, the probability of rolling an even number is 3/6 or 1/2.

Therefore, out of 30 rolls, you would expect to roll an even number approximately 1/2 * 30 = 15 times.