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Sheet # 64 Critical Thinking

Name: _____________________ Date_____________


Show and explain your work. Draw pictures or make tables to explain your answer.

A group of four people meet for coffee at Starbucks every week. If they sit in a different order at the table each week, how many weeks until they have to repeat a seating arrangement?























































Answer for sheet # 64


It is 4 x 3 x 2 x 1 = 24 combinations. It means 12 weeks before repeating the same combination. You can start with two people, three people.

Two people ( a, and b)

combinations are

ab
ba

2 x 1 =2 combinations


Three people (a, b, and c)|

abc
acb
bac
bca
cab
cba

Totat combinations are 6

3 x 2 x 1 = 6