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AQA GCSE Maths Probability basics

Probability basics

This page covers the following topics:

Probability is the likelihood or chance of an event occurring. Increasing the number of measurements taken means the experimental probability approaches the theoretical probability.

Definition of probability

Tables are a quick and simple method to display collected experimental probabilities.

Using tables to find probability

1

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If a dice is rolled and the probability of rolling a 1 is 1/6, what is the probability of not rolling a 1?

AQA GCSE Maths Probability basics If a dice is rolled and the probability of rolling a 1 is 1/6, what is the probability of not rolling a 1?
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2

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What is the probability of randomly picking the letter S from the letters in StudySquare?

AQA GCSE Maths Probability basics What is the probability of randomly picking the letter S from the letters in StudySquare?
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3

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Complete the given table, by giving the missing value, to show the probabilities of finding each type of animal in a pet store.

AQA GCSE Maths Probability basics Complete the given table, by giving the missing value, to show the probabilities of finding each type of animal in a pet store.
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4

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A bag contains 4 different coloured beads. The probabilities of randomly picking a red, green, or blue bead are 1/2, 1/8, 1/4. What is the probability of picking a yellow bead?

AQA GCSE Maths Probability basics A bag contains 4 different coloured beads. The probabilities of randomly picking a red, green, or blue bead are 1/2, 1/8, 1/4. What is the probability of picking a yellow bead?
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5

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From the given table, what is the probability of picking someone with either grey or blonde hair?

AQA GCSE Maths Probability basics From the given table, what is the probability of picking someone with either grey or blonde hair?
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