Learn when to “Add� and “Multiply� in P & C

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Learn when to "Add" and "Multiply" in Permutation & Combination questions- Exercise Question #1

There's a party in town and Mike can't decide what to wear. However, he has decided to follow the following:
  • 1. He will wear tie and shoes
    2. He may or may not wear socks.
Mike has 3 ties, 4 pairs of shoes and 5 pairs of socks.
In how many ways can Mike dress for the party?

Options:
A) 12
B) 60
C) 72
D) 144
E) 288

Learn to use the Keyword Approach in Solving PnC question from the following article:

Learn when to "Add" and "Multiply" in Permutation & Combination questions


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