Question 309702
 In a certain lottery, 4 numbers between 1 and 10 inclusive are drawn. These are the winning numbers. How many different selections are possible? Assume that the order in which the numbers are drawn is not important. 
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# of sets of 4 numbers: 10C4 = (10*9*8*7)/(1*2*3*4) = 210
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# of winning sets of 4: 4! = 4*3*2*1 = 24
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Cheers,
Stan H.