Discrete Mathematics
# Discrete Mathematics Warmups

How many ways are there to arrange them in a row (without any restriction)?

Andy and Brandy are very friendly and want to sit next to each other. How many ways are there to arrange all 4 quadruplets in a row?

Andy, Brandy, Candy and Dandy are 4 quadruplets.

Andy and Candy are quarreling with each other, and refuse to sit next to each other. How many ways are there to arrange them in a row?

Andy and Candy are quarreling with each other, and refuse to sit next to each other.

Likewise, Brandy and Dandy are quarreling with each other, and refuse to sit next to each other.

How many ways are there to arrange them in a row?

Andy and Brandy are quarreling with each other, and refuse to sit next to each other.

Andy and Candy are quarreling with each other, and refuse to sit next to each other.

How many ways are there to arrange them in a row?

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