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Probability as a fraction

One counter is picked at random. Write each probability in lowest terms.

How to use this tool

One counter is picked at random. Write each probability in lowest terms.

Choose largest colour group and the number of questions.
One counter is picked at random. Write each probability in lowest terms.
Print the practice pages for learners; keep the answer pages for checking.

Up to 24 questions. Some topics use products of the selected range, so final values can be larger. Questions may repeat in small ranges.

Your entries stay in this browser. Print at 100% scale on matching A4 or Letter paper. Printing help

Sample questions

Bag: 3 red, 5 blue, 7 green counters. P(red)?
Bag: 7 red, 1 blue, 8 green counters. P(not red)?
Bag: 3 red, 12 blue, 11 green counters. P(red)?

Check answers

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