The AND / OR Rules (AQA GCSE Maths): Quizzes

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The AND / OR Rules
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10 questions from this quiz

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Which scenario involves independent events?

Rolling two dice

Which scenario involves dependent events?

Picking a ball without replacing it

What operation does the AND rule use?

Multiplication

Why do we subtract in the OR rule formula?

To avoid double-counting overlap

What are mutually exclusive events?

Events that can't happen together

Which word indicates you should use the AND rule?

Both

Which phrase indicates you should use the OR rule?

At least one

PP(yellow from bag X)=0.4=0.4, PP(yellow from bag Y)=0.25=0.25. Find PP(both yellow).

0.10.1

A spinner has PP(red)=0.25=0.25, PP(green)=0.1=0.1. Find PP(red or green).

0.350.35

When can you use the simplified OR rule P(A)+P(B)P(A) + P(B)?

For mutually exclusive events

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