Determine the number of 5 - card combinations out of a deck of 52 .cards of each selection of 5 cards has exactly one king.

Explanation

Therè are 4 kings and 48 other cards: `In 5` cards, there must be exactly one king. One king from 4 kings can be selected in- ` ^prime`, ways and 4 cards from 48 cards can be .selected in ` ^48 C_4` ways

Number of 5 card combination `= ^4 C_1 xx ^48 C_4=778320`