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How do you find the probability of rolling a number less than a certain number on one roll of a die?
Wiki User
∙ 9y ago
The probability of rolling a number on a die is 1 out of the number of sides on the die. So, for a six sided die, the probability of rolling a 4 is 1/6. The probability of rolling a 4 or a 5 becomes 2/6 or 1/3. This is because there are two acceptable outcomes out of six. So when finding the probability of rolling a number less than x on a y sided die, it becomes x-1 / y. It is x-1 because the outcome is to roll less than the number, not less than or equal.
Wiki User
∙ 9y ago
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How do you find the probability of a number or another number?
To find the probability of something happening orsomething else happening, you add together the probability of each happening, and then subtract the probability of both happening.For instance, the probability of rolling greater than 4 on a dice is 1/3. You could roll 5 or 6. The probability of rolling an even number is 1/2. You could roll 2, 4 or 6. The probability of rolling greater than 4 or an even number is 1/3 + 1/2 - 1/6 which = 2/3
Connor is asked to find the probability of rolling a prime number on a die. He states that this is a simple event. True or false?
True
What is the probability of not rolling factors of 3 on the first die?
Find aobability
Find the odds of rolling less than a four by rolling the dice once?
The probability is 3/6 or 1/2
Find the probability of rolling a sum of 5 with 2 dice?
The probability of rolling a sum of 5 with two die is 4 over 36, or 2 over 18, or 1 over 9.
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.
How do you find the probability of a number or another number?
To find the probability of something happening orsomething else happening, you add together the probability of each happening, and then subtract the probability of both happening.For instance, the probability of rolling greater than 4 on a dice is 1/3. You could roll 5 or 6. The probability of rolling an even number is 1/2. You could roll 2, 4 or 6. The probability of rolling greater than 4 or an even number is 1/3 + 1/2 - 1/6 which = 2/3
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%
A die is tossed. Find the odds against rolling a number greater than 1.?
The probability of rolling a number greater than 1 is 5/6.
Suppose you roll one die find the probability of not rolling an even number?
Not even is odd. Odd is 1,3,& 5 which is 1/2 of the numbers on the die. Therefore the probability of not rolling an even number is 1/2 or 0.5.
What is the probability of rolling a 7 or 11 with two dice?
The probability of rolling a 7 with 2 dice is 6/36; probability of rolling an 11 is 2/36. Add the two together to find probability of rolling a 7 or 11 which is 8/36 or 2/9.
How do you find the probably?
The probability is simply the number of times that something can happen divided by the number of times that anything can happen. For instance, rolling a die has a possible result set of six results. The probability, however, of rolling a 1 is one in six, or about 0.1667.
Probability that an event will not occur?
To find the probability that an event will not occur, you work out the probability that it will occur, and then take this number away from 1. For example, the probability of not rolling two 6s in a row can be worked out the following way:The probability of rolling two 6s in a row is 1/6 x 1/6 = 1/36Thus the probability of not rolling two 6s in a row is 1 - 1/36=35/36.
A single die is rolled one time Find the probability of rolling a number that is odd and less than 4?
1
Connor is asked to find the probability of rolling a prime number on a die. He states that this is a simple event. True or false?
True
What is the probability of not rolling factors of 3 on the first die?
Find aobability
How is probability helpful?
probability helps you find the chance of something like when you're rolling a dice you might want to know what is the chance you get a 1 or anyother number or if you want to find out how much of school is already over. I find probability very helpful for quickly changing fractions into deciamls.
