Dice Probability: 5 Rolls, Increasing Number

However, since the sequences are required to be increasing, all 5 numbers must be different and there is only one order in which these numbers can be arranged. Therefore, there are exactly 6 possible increasing sequences of 5 die roll outcomes from a total of 6^5 possible sequences. In summary, the probability of getting a higher number than the previous number each time when rolling a dice 5 times is 6/6^5, or 1/6^4.
  • #1
juantheron
247
1
A Dice is Rolled $5$ times. The Probability of Getting a higher number then the previous number each time is
 
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  • #2
It's easy to explicitly enumerate all increasing sequences of 5 numbers from {1, ..., 6}.
 
  • #3
jacks said:
A Dice is Rolled $5$ times. The Probability of Getting a higher number then the previous number each time is

Because the sequences are increasing all the die rolls are different, as there are only 6 possible outcomes all but one of the outcomes must be present in such a sequence and there is only one order that these can be in, so there are exactly \(6\) increasing sequences of 5 die roll outcomes from a total of \(6^5\) possible sequences of 5 die roll outcomes...

CB
 

FAQ: Dice Probability: 5 Rolls, Increasing Number

What is the probability of getting at least one 6 in 5 rolls of a single die?

The probability of getting at least one 6 in 5 rolls of a single die is 67.16%. This can be calculated by taking the complement of the probability of getting no 6's, which is (5/6)^5. Therefore, the probability of getting at least one 6 is 1 - (5/6)^5 = 0.6716.

What is the probability of getting exactly two 5's in 5 rolls of a single die?

The probability of getting exactly two 5's in 5 rolls of a single die is 16.20%. This can be calculated by using the binomial probability formula, where n=5 (number of trials), k=2 (number of successes), and p=1/6 (probability of getting a 5). Therefore, the probability is (5 choose 2) * (1/6)^2 * (5/6)^3 = 0.1620.

What is the most likely outcome of 5 rolls of a single die?

The most likely outcome of 5 rolls of a single die is getting three different numbers. This can be calculated by finding the mode of the probability distribution, which is when the number of different numbers rolled is equal to the number of rolls (5). Therefore, the most likely outcome is (5 choose 3) * (1/6)^3 * (5/6)^2 = 0.3086.

How does the probability change if we increase the number of rolls?

The probability of getting a certain outcome will decrease as the number of rolls increases. For example, the probability of getting at least one 6 in 10 rolls of a single die is 83.44%, which is higher than the probability of getting at least one 6 in 5 rolls (67.16%). This is because the more rolls there are, the more opportunities there are for the other numbers to be rolled, decreasing the likelihood of getting a specific outcome.

Can we use this concept to predict the outcome of a single roll of a die?

No, we cannot use this concept to predict the outcome of a single roll of a die. The probability of getting a certain outcome in multiple rolls does not guarantee that outcome in a single roll. Each roll of the die is independent of the previous rolls and has an equal chance of landing on any number. Therefore, this concept cannot be used to predict the outcome of a single roll.

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