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April 29, 2024, 05:09:09 pm
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Author Topic: Probability help please  (Read 697 times)  Share 

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Zahta

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Probability help please
« on: November 08, 2011, 07:45:19 pm »
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porbability help


In how many ways can a set of 4 grls be selected from 10
a. if the edldest girl is included in each set,
b. if the eldest girl is excluded from each set



Another question

A class consits of 15 students of whom 5  are prefects . How many committees of 8 can be formed , each containing
a. exactly 2 prefects
b. at least 2 prefects

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kamil9876

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Re: Probability help please
« Reply #1 on: November 09, 2011, 02:45:42 pm »
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You already started the thread, I posted the answer here earlier: Re: Math methods unit probability help please
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Voltaire: "There is an astonishing imagination even in the science of mathematics ... We repeat, there is far more imagination in the head of Archimedes than in that of Homer."
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