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2/36 what you rolled the first time has nothing to do with the next roll. It's an independent event.

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โˆ™ 2012-04-12 21:51:26
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Q: If You roll a fair number cube twice What is the probability of rolling two threes if the first roll is a 5?
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What is the probability of rolling a 6 and then a 1 on consecutive rolls of a standard sided number cube?

If you keep rolling the die, then the probability of rolling a 6 and then a 1 on consecutive rolls is 1.The probability is 1/36 for the first two throws.


What is the probability of rolling a prime number and the probability of rolling a number greater than 1 on two rolls fo a die?

First you need to work out the probability of rolling a prime number. The prime numbers on a die are 2, 3 and 5. Thus the probability of rolling a prime number is 3/6 which can be simplified to 1/2. The probability of rolling a number greater than 1 is 5/6. The probability of rolling one on one dice and one on the other is therefore 1/2 x 5/6 = 5/12. There are two possible ways round these options could come though. You might get the number greater than one on the first roll, and the prime on the second. Thus we need to multiply the probability by 2, which gives us the final answer of 5/6.


What is the probability of rolling a 6 the first time and a 1 the second time?

What is the probability of rolling a 6 the first time and a 1 the second time


Rolling three dice what is the probability of rolling an odd number?

The probability that, when rolling three dice none will come up odd is broken down by the probability that on odd roll will occur as an independent event. Rolling the first die has a probability of 3/6 that it will be odd. Rolling the second has the probability of 3/6 that it will be odd. Rolling the third has a probability of 3/6 will be odd. Rolling three and coming up with odd is really the probability that no odd numbers occurred, so therefore an even number DID happen (3/6), and an even number DID happen (3/6), and an even number DID happen (3/6). That's really just 1 - (3/6^3) or simplified 1 - (1/2^3). So therefore the probability that an odd number occurred in 3 die rolls is about 87.5%.


What is the probability of rolling a prime number first and a composite number second with a fair number cube?

It is 1/2*1/3 = 1/6

Related questions

What is the probability of rolling a 6 and then a 1 on consecutive rolls of a standard sided number cube?

If you keep rolling the die, then the probability of rolling a 6 and then a 1 on consecutive rolls is 1.The probability is 1/36 for the first two throws.


What is the probability of rolling a prime number and the probability of rolling a number greater than 1 on two rolls fo a die?

First you need to work out the probability of rolling a prime number. The prime numbers on a die are 2, 3 and 5. Thus the probability of rolling a prime number is 3/6 which can be simplified to 1/2. The probability of rolling a number greater than 1 is 5/6. The probability of rolling one on one dice and one on the other is therefore 1/2 x 5/6 = 5/12. There are two possible ways round these options could come though. You might get the number greater than one on the first roll, and the prime on the second. Thus we need to multiply the probability by 2, which gives us the final answer of 5/6.


Find the probability of rolling a 2 on a number cube and then an even number on two consecutive rolls of a number cube?

1/6,3/6 ----------------------------------------------------------------------------------------------------- The probability of rolling a 2 is: P(2) = 1/6 The probability of rolling an even number is: P(even) = 1/2 The result on the second roll is independent of the result in the first roll. The probability of rolling a 2 and then rolling an even number is: P(2,even no.) = (1/6) ∙ (1/2) = 1/12 = 0.08333... ≈ 8.33%


What is the probability of rolling a 6 the first time and a 1 the second time?

What is the probability of rolling a 6 the first time and a 1 the second time


What is the probability of rolling the same number when three number cubes are rolled?

The first roll doesn't matter for probability, it just sets the number to be rolled by the other two. So: P(rolling the same number three times) = P(rolling a particular number)2 = (1/6)2 = 1/36


Rolling three dice what is the probability of rolling an odd number?

The probability that, when rolling three dice none will come up odd is broken down by the probability that on odd roll will occur as an independent event. Rolling the first die has a probability of 3/6 that it will be odd. Rolling the second has the probability of 3/6 that it will be odd. Rolling the third has a probability of 3/6 will be odd. Rolling three and coming up with odd is really the probability that no odd numbers occurred, so therefore an even number DID happen (3/6), and an even number DID happen (3/6), and an even number DID happen (3/6). That's really just 1 - (3/6^3) or simplified 1 - (1/2^3). So therefore the probability that an odd number occurred in 3 die rolls is about 87.5%.


What is the probability of rolling the same number 4 times?

The first number doesn't matter, just that the last three are the same as the first. P(rolling the same as the number before) = 1/6 P(rolling the same number as the first three times = (1/6)3 = 1/216


What is the probability of rolling a prime number first and a composite number second with a fair number cube?

It is 1/2*1/3 = 1/6


What is the probability of rolling a 4 or a 12 on the first roll of a pair of dice?

The probability of rolling a 4 is 3/36 . The propbability of rolling 12 is 1/36 . The probability of rolling either one is 4/36 = 1/9 = 111/9 percent.


What is the probability of rolling a 2 on your first roll?

1 out of 6


What is the probability of rolling a 2 and then a 3 with 6-sised cubes?

The probability of rolling a 2 on the first roll is 1 in 6. The probability of rolling a 3 on the second roll is 1 in 6. However, the probability of rolling a 2 on the first roll and 3 on the second roll before you roll at all is 1/6 x 1/6 = 1 in 36.


What is the probability of rolling first an odd number then an even number with one fair die?

Prob = 1/2 * 1/2 = 1/4

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