answersLogoWhite

0


Best Answer

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

User Avatar

Wiki User

12y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: How do you find the probability of a number or another number?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

How do you find experimental-probability?

To find the experimental probability of an event you carry out an experiment or trial a very large number of times. The experimental probability is the proportion of these in which the event occurs.


What is the theoretical probability of getting 4 tails out of ten throws?

theoretical probability is one half experimental probability is four tenths this is because to find theoretical probability you need to do number of outcomes you were looking for over the number of outcomes possible experimental probability is number of turns that were what you were looking for over the number of turns


You roll a number cube Find and describe the probability of the event?

what is the probability of P(4or6) as a fraction, decimal and a percent


How do you find the probability of a number?

Here's a website that might help you with finding the probability of a number: http://www.mathgoodies.com/lessons/vol6/intro_probability.html Hope this will help you!


Find the probability of getting a number greater than 5 when a die is rolled one time?

The probability is 1/6.


How can you find the probability of a simple event if the total number equally likely outcomes is 20?

Each outcome has a probability of 0.05


How do you find the probability in math?

The formula for probability is as follows:Probability = Total number of favorable cases / total number of casesIt always lies between 0 and 1 and has no unit.


Roll a number cube from 1 to 6 Find probability not a 4 Express the probability as a decimal Round to the nearest hundredth?

It is 0.83


What is the probability of rolling an even number on one cube and a number greater than two on the another?

4 out of 12


When a die is rolled find the probability of getting a a number larger than 2?

If it is a fair die that is rolled once, then the probability is 2/3.


What is the probability of drawing a diamond from a deck of cards?

To find out the probability of something like this, you just find the number of diamonds and divide it by the total number of cards. In this case, there are 13 diamonds in a deck, and 52 cards. Dividing 13 by 52 gives 0.25. This can then be converted into a percentage, making the probability 25% or into a fraction, making the probability 1/4


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.