0
In solving problems like this, the most straightforward approach is to make a table. Columns are used to show the six outcomes from one of the dice, rows the outcomes from the other die. In each cell of the table put the sum of the two dice. Now go throught the table row by row, counting the values that are prime numbers. There are 36 cells in the table, and I counted 15 primes, making a probability of 15/36 = 5/9.
But my counting has been wrong before! You had better check it.
Add your answer:
Earn +20 pts
What is the probability of rolling a prime number or non prime number?
Half
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 prime number on a 6 face dice?
If the numbers are 1 to 6, there are three prime numbers in that range, a probability of 50%.
What is the probability of rolling a prime number on a toss of the normal die?
2:3
What is the theoretical probability of rolling a 1 and a prime number on two six-sided number cubes?
The probability is 6/36 or 1/6
What is the probability of rolling a prime number and flipping a coin and getting tails?
1 in 2.
What is the probability of rolling a prime number or non prime number?
Half
If you roll a die what is the probability of rolling a prime number?
"The probability of getting a prime number in a die is 4/6" Actually there are 3 prime numbers on a die. 2, 3, and 5 are all prime numbers. So this tells you that you have 3 chances it will be a prime number and 3 chances it will not be a prime number. So the probability of getting a prime number on a die would be 3/6 or 1/2.
What is the probability of rolling an even number or prime number on a number cube?
The probability of rolling an even number on a die is 3 in 6 or 1 in 2. The probability of rolling a prime on a die is 3 in 6 or 1 in 2, but one of those primes is also even. Simply add the probabilities and you find that the probability of rolling an even number or a prime on a die is 5 in 6.
What is the probability of getting a six then a prime number?
The probability of rolling a six and then a prime on a die is (1 in 6) times (3 in 6), which is (3 in 12), which is (1 in 4), or 0.25
What is the faction of rolling a prime number?
With a standard 6-sided die, the probability of rolling a prime number is 1/2
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 prime number with one roll of a number cube?
1/6
What is the probability of rolling an even prime number with one roll of a die?
Since there is only one even prime, 2, the probability of rolling a 2 with one die is 1 in 6.
What is the probability of rolling a prime number on a toss of the normal die?
2:3
What is the probability of rolling a prime number on one roll of a die?
3/6
What is the probability of rolling a prime number on a 6 face dice?
If the numbers are 1 to 6, there are three prime numbers in that range, a probability of 50%.
