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

Question

Goodman

Mathematics

1 November, 19:23

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

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Answers (2)

Know the Answer?

Valentin · 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

Dominik · Answer 2

13 times or 33%

Step-by-step 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.