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iGCSE (2021 Edition)

23.04 Theoretical probability

Interactive practice questions

A bag contains red marbles and blue marbles.

If the probability of drawing a red marble is $\frac{28}{51}$2851, what is the probability of drawing a blue marble?

Easy
< 1min

Consider this list of numbers:

$2,2,2,3,3,3,4,4,5,5,5,7,7,7,7,9,9$2,2,2,3,3,3,4,4,5,5,5,7,7,7,7,9,9

Easy
1min

The probability of the local football team winning their grand final is $0.36$0.36.

Easy
< 1min

The probability that it hails today is $0.43$0.43.

Easy
< 1min
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Outcomes

0580C8.1

Calculate the probability of a single event as either a fraction, decimal or percentage.

0580C8.2

Understand and use the probability scale from 0 to 1.

0580C8.3

Understand that the probability of an event occurring = 1 – the probability of the event not occurring.

0580E8.1

Calculate the probability of a single event as either a fraction, decimal or percentage.

0580E8.2

Understand and use the probability scale from 0 to 1.

0580E8.3

Understand that the probability of an event occurring = 1 – the probability of the event not occurring.

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