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Senior | Next Rank: 100 Posts
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by danjuma » Sun Oct 10, 2010 8:56 am
Joshua and Jose work at an auto repair centre with 4 others. For a survey on health insurance , 2 of the workers will be randomly chosen to be interviewed. What is the probability that Joshua and Jose will both be chosen?
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by shovan85 » Sun Oct 10, 2010 9:12 am
Is it [spoiler]1/15[/spoiler].

P(One of Joshua and Jose to get selected out of total 6 ppl) = 2/6
P(After one got selected the other one to be selected out of total 5 ppl) = 1/5

[spoiler]Total = (2/6)*(1/5) = 1/15[/spoiler].
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by NKB » Sun Oct 10, 2010 9:35 am
The total number of ways for selecting 2 out 6 workers in 6C2 = 15 ways

There will be only 1 way when both of these workers will be selcted in one couple
so probability = [spoiler]1/15[/spoiler]
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by lokesh r » Sun Oct 10, 2010 1:22 pm
danjuma wrote:Joshua and Jose work at an auto repair centre with 4 others. For a survey on health insurance , 2 of the workers will be randomly chosen to be interviewed. What is the probability that Joshua and Jose will both be chosen?
should be 1/15..
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