SOLUTION: Thirteen people are entered in a race. If there are no ties, in how many ways can the first two places come out?
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-> SOLUTION: Thirteen people are entered in a race. If there are no ties, in how many ways can the first two places come out?
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You can put this solution on YOUR website! ANY ONE OF THE 13 CAN BE IN THE FIRST PLACE.
THEN ANY ONE OF THE REST 12 CAN BE IN THE SECOND PLACE
SO TOTAL NUMBER OF POSSIBILITIES = 13*12=156