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Question

Mathematics Question on permutations and combinations

Find the number of ways of choosing 44 face cards from a pack of 5252 playing cards.

A

495495

B

493493

C

490490

D

492492

Answer

495495

Explanation

Solution

There are 1212 face cards and 44 are to be selected out of these 1212 cards. This can be done in 12C4^{12}C_{4} ways. Therefore, the required number of ways =12!4!8!=495= \frac{12!}{4! 8!}= 495.