Back to Exercise: Permutations

Exercises: Permutations

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Grade 10·18 problems·~25 min·ACT Math·topic·act-sp-counting-perm
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A

Recall / Warm-Up

These problems review prerequisite skills.

1.

A student has 4 shirts and 3 pairs of pants. Using the fundamental counting principle, how many different outfits can the student make?

2.

What is the value of the expression n!n! when n=0n = 0?

3.

Which scenario requires counting ordered arrangements rather than unordered groups?

B

Fluency Practice

Use the permutation formula or factorial simplification to compute each value.

1.

Evaluate 7!5!\frac{7!}{5!}.

2.

What is P(6,2)P(6, 2)?

3.

Compute P(9,3)P(9, 3).

4.

Compute P(5,5)P(5, 5).

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