Permutations and Combinations

Front

7!

Back

5040

Front

₂₀P₂

Back

380

Front

What does ₁₀P₅ mean?

Back

Permutations with 10 choices and 5 positions

Front

Permutation, combination, or neither?
Rob and Mary are planning trips to 9 countries this year.  There are 13 countries they would like to visit.  They are deciding which countries to skip.

Back

combination

Front

Permutation, combination, or neither?
The batting order for seven players on a 12 person team.

Back

permutation

Front

Permutation, combination, or neither?
There are 45 applicants for three Computer Programmer job positions.

Back

combination

Front

Find the number of words, with or without meaning, that can be formed with the letters of the word ‘CHAIR’.

Back

120

Front

Choosing 3 toppings for your sundae out of a list of 15.

Back

Combination

Front

Find the number of possibilities: A group of 25 people are going to run a race. The top 8 finishers advance to finals.

Back

1081575

Front

How many outfits are possible with 5 pairs of jeans, 8 t-shirts, and 2 pairs of shoes?

Back

The total number of outfits is calculated by multiplying the number of options: 5 jeans * 8 t-shirts * 2 shoes = 80 outfits.