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Earn +20 ptsQ: How many ways can 4 people be chosen from a group of 12?
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How many ways can 4 people be chosen from a group of 9and is this a combination or permutation?
it is a combination: 9!/4!=9 x 8 x 7 x 6
How many ways can a president vice president and secretary be chosen for a committee of 9 people?
There are 9*8*7 = 504 ways.
How many different ways can 5 people be selected from a group of 18?
The number of ways is 18C5 = 18!/(5!*13!) = 8,568 ways.
How many ways can 4 people be chosen from a group of 17?
You can choose 4 people in (17 x 16 x 15 x 14) = 57,120 ways.But there are (4 x 3 x 2) = 24 ways to pick the same 4 people, so there are only57,120/24 = 2,380 different groups of 4 people that you can end up with.
In how many ways can 4 people be chosen from a group of 12 people and arranged in a straight line?
First in line can be any of the 12, second can be any of the remaining 11, third any of 10 and fourth any of 9 so 12 x 11 x 10 x 9 ie 11880 different ways
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