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Question
Ten students are participating a race. In how many ways can the first 3 prizes be won?
Ten students are participating a race. In how many ways can the first 3 prizes be won?
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Solution
The correct option is D 720
Out of 10 students, the first three prizes can be won in 10P3=10!(10−3)!=10!7!=10×9×8=720 ways.
Out of 10 students, the first three prizes can be won in 10P3=10!(10−3)!=10!7!=10×9×8=720 ways.
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