How many ways can you pick a face card, then a diamond from a standard deck of cards? Assuming you put the first card back?
153
156
120
180
Because there are 13 diamonds in a standard deck, there are 13 ways to choose one.
We don't need to know whether the first card was a diamond or not, and we don't need to know whether the second card is a face card or not.
Therefore, the number of ways to pick a face card is
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