Question 677789
"Fifteen students have applied for a scholarship, but only 6 can be selected. How many groups are possible?" 
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Note: "Combinations" is the way to count groups.
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Your Problem:
Ans. = 15C6 = 15!/[(15-6)!*6!] = (15*14*13*12*11*10)/(1*2*3*4*5*6) = 5005
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Cheers,
Stan H.