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I'm going to assume you mean rolling the same number twice in a row in 25 rolls. The first won't cause a double, so you just need to consider the odds of rolling the same number as the last for the last 24 rolls. The easier approach is to realize that the probability of rolling at least one double is 1 minus the probability of rolling no doubles. One roll has this probability of not rolling the same as the last:
P(different number from last) = 5/6
Since they are independent events:
P(no doubles in 25 rolls) = (5/6)24
Now the final probability, of at least one double, is 1 - (5/6)24
What else can I help you with?
What are the odds of rolling two ones on two 20-sided dies?
The odds of rolling a single one on a 20-sided die is 1 in 20 (1/20). Since the rolls are independent events, the odds of rolling two ones on two 20-sided dice would be (1/20) * (1/20), which simplifies to 1 in 400 (1/400).
What is the odds of rolling a die of less than a 4?
50%
What are the odds of rolling a 3?
On a single die it is 1 in 6.
What are the odds of rolling a 1 in dice?
The probability of rolling a 1 on a die is 1/6 if you roll it once.
What are the odds of rolling an even number when using a die?
one half.
What are the odds of rolling a four on one die?
Since there are six sides on a die, the odds of rolling a 4, or any digit for that matter is 1/6
What are the odds of rolling less than a four rolling the die once?
0.5
What are the odds of rolling less that a 4 when rolling a die once?
if you rollid a die once the odds of getting less than four would be 3/6 or 50%.
What are the odds of rolling two ones on two 20-sided dies?
The odds of rolling a single one on a 20-sided die is 1 in 20 (1/20). Since the rolls are independent events, the odds of rolling two ones on two 20-sided dice would be (1/20) * (1/20), which simplifies to 1 in 400 (1/400).
What is the odds of rolling a die of less than a 4?
50%
What are the odds of rolling a 3?
On a single die it is 1 in 6.
What are the odds of rolling a 1 in dice?
The probability of rolling a 1 on a die is 1/6 if you roll it once.
What is the probability of rolling a positive number out of 150 rolls?
The answer depends on what you are rolling. With an ordinary die, the answer is 1 (a certainty)..
A die is rolled Find the odds for rolling a 5?
5 to 1
What are the odds of rolling an even number when using a die?
one half.
What are the odds of rolling a six sided die and getting a three?
One in Six
What are the odds of a factor of a 6 when rolling a die?
2/3 or 2:3
