Question

If Harriet rolls the number cube 39 times, how many times can you expect to roll a 3 or 4

Answer 1

Hello there,

If Harriet rolls the number cube 39 times, how many times can you expect to roll a 3 or 4

Answer: 13

Answer 2

13 times or 33%

Explanation:

The probability is the number of chances divided by the total number. The total number of options is 6 since it is a six sided cube. She could roll a 3 or a 4. These are two options out of total of 6.

2 out of 6 is 2/6 which simplifies to 1/3 =0.33 = 33%

If she rolls 39 times then you can expect, she rolled a 3 or 4 - 0.33(39)= 12.87 which rounded up is 13 times.