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枫下家园 / 望子成龙 / my son's home work , please helpMs. Bascom has 20 students in her class. she is choosing their names from a hat to form 3 groups.
group 1 will have 10 students.
group 2 will have 8 students.
group 3 will have 2 students.
what is the probability that a particular student will be chosen for group 2?
-winding(beetle);
2005-11-24
{270}
(#2625550@0)
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8/20
-sunshower(apple);
2005-11-24
(#2625602@0)
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不是贴过了嘛,20分之8呀。
-x888(我可不敢刷网了);
2005-11-24
(#2625613@0)
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8/20, 2/5 or 40%
-sr-71(Blackbird);
2005-11-24
(#2625619@0)