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When you rolla 6-sided die about what fraction of the time would you expect a factor of 20 to come up?
Wiki User
∙ 8y ago
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Ophelia Schroeder
Wiki User
∙ 12y agoTotal possible outcomes of one cube = 6.
Factors of 20 that can show on the cube: 1, 2, 4, and 5 . . . . 4 of the 6 possibilities.
Probability of rolling a factor of 20 = 4/6 = 2/3 = 662/3 % .
That's the probability on each individual roll, and the fraction of success during
an infinite number of rolls. It doesn't tell you anything about what to expect on
any single roll, regardless of anything that came before. There's no such thing as
"my number is due".
Example: If none of the previous 10 rolls was successful, that doesn't tell you
anything about what to expect on the 11th one.
Wiki User
∙ 8y ago2/3 of the time.
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When you rolla 6 sided die about what fraction of the time would you expect a factor of 20 to come up?
The factors of 20 are 1, 2, 4, 5, 10, and 20. We can take 10 and 20 off the list, because they're not on the six-sided dice. So, 4 out of 6 sides of the dice will give us a factor of 20. That means we can expect (if the dice is fair) to get a factor of 20 about 4/6 of the time. 4/6 simplified is 2/3.
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