Question: There exists a number that is divisible by both 2 and 3 For every hobby, there is someone who enjoys it. There are exactly two

There exists a number that is divisible by both 2 and 3

For every hobby, there is someone who enjoys it.

There are exactly two people who brought cake to the party

Show that this argument is valid without a truth table (be sure to number each step and justify):

p q p r ------------------ q r

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