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Class 7 maths · Y.2 · Compound events

Count outcomes with the counting principle: three choices

Multiply the number of choices for each part.

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  1. An outfit uses 1 of 5 shirts, 1 of 5 pants and 1 of 6 hats. How many different outfits are possible?

    Answer: 150

  2. An outfit uses 1 of 3 shirts, 1 of 5 pants and 1 of 5 hats. How many different outfits are possible?

    Answer: 75

  3. An outfit uses 1 of 5 shirts, 1 of 6 pants and 1 of 3 hats. How many different outfits are possible?

    Answer: 90

Tip: Multiply the number of choices for each part.

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