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# Probability Topic

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PROBABILITY Probability is the chance of whether something will happen or not. If two things have an EQUAL chance of happening, they have the SAME probability. If there are MORE chances of something happening (A) than something else (B), that means there is a HIGHER PROBABILITY of that something (A) happening. Example: Say we have a bag full of 6 marbles. In this bag there are 2 red marbles and 4 blue marbles. Since there are MORE blue marbles than red, there is a higher probability of someone picking a blue marble out of the bag than a red marble. Probability facts: Probability of picking a blue marble = 4 out of 6 4/6 Probability of picking a red marble = 2 out of 6 2/6 Probability facts are usually written as a FRACTION. You Try What is the probability of picking an even number out of the 5 numbers below? 3 6 8 7 9 a] 1/5 b] 3/5 c] 2/5 d] 4/5 Answer: 2/5 (You have 2 out of 5 chances to pick an even number because two of the five numbers are even numbers.) © Copyright NewPath Learning. All Rights Reserved. Permission is granted for the purchaser to print copies for non-commercial educational purposes only. Visit us at www.NewPathLearning.com.