Question

If you roll a number cube 90 times, how many times do you expect to roll a 3?

45 times
30 times
15 times
23 times

Answer 1

15 times

Explanation:

3 is one of the six numbers on a die.

The probability of rolling a 3 in one roll is
`(1)/(6)`.

If you multiply it by 90, you get 15 times.

Answer 2

C 15

Explanation:

3 = 1/6

since there's 90 times

90/6 is equal to 90 x 1/6

90/6

= 15