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Edexcel GCSE Maths Simple probabilities

Simple probabilities

This page covers the following topics:

If all outcomes are equally likely, probability of one outcome is 1 / No. of outcomes.

Randomness and equality

If all several outcomes are equally likely, probability of one such outcome is No. of similar outcomes / No. of outcomes.

Multiple similar outcomes

1

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Calculate the probability of winning a particular prize on the wheel of fortune if there are 25 prizes with equal areas on the wheel. Give your answer as a decimal.

Edexcel GCSE Maths Simple probabilities Calculate the probability of winning a particular prize on the wheel of fortune if there are 25 prizes with equal areas on the wheel. Give your answer as a decimal.
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2

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Calculate the probability that rolling a standard six-sided dice will give less than 2.

Edexcel GCSE Maths Simple probabilities Calculate the probability that rolling a standard six-sided dice will give less than 2.
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3

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There are 3 red, 4 blue and 3 green balls in a box. What is the probability of picking a green ball from the box if they are chosen randomly?

Edexcel GCSE Maths Simple probabilities There are 3 red, 4 blue and 3 green balls in a box. What is the probability of picking a green ball from the box if they are chosen randomly?
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4

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A multiple choice question has options A, B, C, D, E. Find the probability of guessing the answer correctly if both answers B and D are correct.

Edexcel GCSE Maths Simple probabilities A multiple choice question has options A, B, C, D, E. Find the probability of guessing the answer correctly if both answers B and D are correct.
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5

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There are 15 tea, 20 apple juice and 25 milk drinks provided to students in identical boxes with no labels. Calculate the probability of a student randomly choosing milk.

Edexcel GCSE Maths Simple probabilities There are 15 tea, 20 apple juice and 25 milk drinks provided to students in identical boxes with no labels. Calculate the probability of a student randomly choosing milk.
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