Pat's pulling socks and mittens out of the closet. There are six identical mittens (they can be worn either on the left or the rigth hand) and nine identical-looking socks in the closet.
How many pieces of apparel had to be taken out of the closet in order to be sure to find: 1) a matching pair; 2) 3 identical matching pairs; and 3) 4 pairs of socks?
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