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Q: If a number cube is rolled 4 times what is the probability that the same number is rolled at least twice?

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The probability of getting an even number on at least one of the 3 rolls is 7/8.

The probability is 0.6187, approx.

The answer depends on how many times it is rolled.

The probability that 14 is rolled at least once is 1 - 5.5*10-32 which, for all intents and purposes, can be treated as 1.

15

It is 1 - 0.3120 = 0.6880, approx.

It is 0.1962

You roll it many times. The probability that it lands on a six is the number of times that it lands on a six divided by the number of times the die has been rolled.

When a number cube is rolled twice, there are 36 possible outcomes. (1,1),(1,2),....(6,6). (3,3) occurs only once. Therefore, the probability of rolling a 3 both times is 1/36.

-78

It is approx 0.99989, that is, a near certainty.

If you rolled a die 120 times, the probability of getting a 6 is one in six. It does not matter how many times you roll the die - the probability is still one in six - except that the long term mean will approach the theoretical value of 0.166... as the number of trials increases.

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