Probability Basics (AQA GCSE Maths): Quizzes

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Probability basics
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10 questions from this quiz

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What does a probability of 0 represent?

Something impossible

What does a probability of 12\frac{1}{2} represent?

Evens (equal chance)

All probabilities must fall between which two values?

0 and 1

What is 34\frac{3}{4} expressed as a decimal?

0.75

What is the formula for probability when outcomes are equally likely?

Favourable ÷ Total outcomes

Which word indicates outcomes are equally likely?

Fair

What must all possible outcomes for a situation add up to?

1

If P(event)=0.3P(\text{event}) = 0.3, what is P(not event)P(\text{not event})?

0.7

A probability of 0.9 means something is:

Very likely

If 3x+2x+5x=13x + 2x + 5x = 1, what is xx?

0.1

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