1.An electronics store receives a shipment of graphing calculators, including 3
20 that are defective. Four of the calculators are selected to be sent to a local high school. How many of these selections will contain no defective calculators?
The number of ways to choose all selections that contain no defective calculators is ____
2.To win at LOTTO in one state, one must correctly select 5 numbers from a collection of 55 numbers (1 through 55). The order in which the selection is made does not matter. How many different selections are possible?
There are _____different LOTTO selections.
3.Television and radio stations use four call letters starting with W or K, such as WXYZ or KRLD. Assuming no repetitions in the second to fourth letters, how manyfour-letter sets are possible using either W or K and only the letters Upper J to Upper Y(Count all possibilities even though, practically, some may be inappropriate.)
There are _______ four-letter sets that can be formed.
4.A baseball team has 8 pitchers, who only pitch, and 14 other players, all of whom can play any position other than pitcher. For Saturday's game, the coach has not yet determined which 9 players to use nor what the batting order will be, except that the pitcher will bat last. How many different batting orders may occur?
There are ______different batting orders.
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