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  3. A talent contest has 8 contestants. Judges must award prizes for first, second,

A talent contest has 8 contestants. Judges must award prizes for first, second,

游客2025-02-23  10
问题 A talent contest has 8 contestants. Judges must award prizes for first, second, and third places, with no ties.
(a)In how many different ways can the judges award the 3 prizes?
(b)How many different groups of 3 people can get prizes?
选项
答案 (a)336(b)56
解析
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