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##### (Solution Download) 2.4.12 From 10 positive and 6 negative numbers, 3 numbers are chosen at random and without...

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**2.4.12 **From 10 positive and 6 negative numbers, 3 numbers are chosen at random and without repetitions. What is the probability that their product is a negative number?

**2.4.13 **In how many ways can a committee of 2*n *+ 1 people be seated along one side of a table, if the chairman must sit in the middle?

**2.4.14 **Each of the 2*n *members of a committee ?ips a fair coin in deciding whether or not to attend a meeting of the committee; a committee member attends the meeting if an *H *appears. What is the probability that a majority will show up in the meeting?

**2.4.15 **If the probability that a coin falls *H *is *p *(0 *p * 1), what is the probability that two people obtain the same number of *H*?*s*, if each one of them tosses the coin independently *n *times?

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##### 2.4.16

**i) **Six fair dice are tossed once. What is the probability that all six faces appear?

**ii) **Seven fair dice are tossed once. What is the probability that every face appears at least once?

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This question was answered on: * Oct 24, 2017 *

* * Solution~00017284422220.zip (18.37 KB)

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