There are 15 students waiting at the bus stop. If the bus can only fit 6 more students, how many ways can the driver select the students to ride the bus?
15C6 = 5,005
A lock contains the numbers 0-39. The lock will open when the lock is spun to the correct 3-numbers, in order. How many different 3-number combinations are possible for the lock if the numbers cannot repeat?
59,280
There are 45 golfers in a tournament. How many ways can they win first, second, and third place?
85,140
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