Probability is a branch of mathematics that describes how likely an event is to occur. It is a number between 0 and 1, where 0 means the event will not happen and 1 means the event will happen.  Probabilities are usually expressed as fractions, decimals, or percentages. For example, a probability of 0.45 (45%) means there are 45 chances out of 100 of an event occurring.  Probability tells us how often some event will happen after many repeated trials. You've experienced probability when you've flipped a coin, rolled some dice, or looked at a weather forecast.  There are three basic rules... Show more

Probability is a branch of mathematics that describes how likely an event is to occur. It is a number between 0 and 1, where 0 means the event will not happen and 1 means the event will happen. 

Probabilities are usually expressed as fractions, decimals, or percentages. For example, a probability of 0.45 (45%) means there are 45 chances out of 100 of an event occurring. 
Probability tells us how often some event will happen after many repeated trials. You've experienced probability when you've flipped a coin, rolled some dice, or looked at a weather forecast. 

There are three basic rules associated with probability: the addition, multiplication, and complement rules.

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Math Practice Test: Probability

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10 Questions

1. In a bag there are 8 white balls and 10 green balls.5 balls are withdrawn from the bag what is the probability that out of the five balls 2 are white and 3 green balls?

0.45none0.550.39

2. If A and B are mutually exclusive events, and if P(A) = 0.55 and P(B) = 0.43, then P(A°UB°)=

0.920.0801

3. Permutation is a sampling.

Without replacement and with orderingWithout replacement and without ordering.with replacement and without ordering.with replacement and with ordering

4. In a purse there are 5 two-rupee and 4 one-rupee coins.If they are drawn out one by one, what is the chance that they come out two-rupee and one-rupee alternately, beginning with a two-rupee coin?

1/2880none1/1261/2°

5. What is the probability of a natural number being divisible by 6 or 12?

6. What is the probability that the first card is a king and the second one a queen of a different suit if two cards are drawn from a pack of 52 cards?

7. In a single toss of 4 coins what is the probability of getting at most one head?

8. What is the probability of getting an even pair in a single throw of two dice, if one of them is loaded in such a way that the probability of getting an odd number is twice as that of an even number?

9. In a single toss of 8 coins, what is the probability of getting one and only one head?

none

10. In a single throw of 4 dice, what is the probability of getting two pairs?