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There are three different assembly operations to be

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There are three different assembly operations to be [#permalink] New post 06 Mar 2008, 22:09
There are three different assembly operations to be performed in making a certain part. There are nine people working on the floor. How many different assembly crews can be formed?

Is this 9C3 or 9P3..thanks.
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Re: Permutation and Combination [#permalink] New post 06 Mar 2008, 22:20
singaks wrote:
There are three different assembly operations to be performed in making a certain part. There are nine people working on the floor. How many different assembly crews can be formed?

Is this 9C3 or 9P3..thanks.


this is a combination problem, so it should be 9c3.
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Re: Permutation and Combination [#permalink] New post 08 Mar 2008, 05:19
singaks wrote:
There are three different assembly operations to be performed in making a certain part. There are nine people working on the floor. How many different assembly crews can be formed?

Is this 9C3 or 9P3..thanks.

you are selecting ppl to form a group where the order that you select people does not matter. its a combo q.
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Re: Permutation and Combination   [#permalink] 08 Mar 2008, 05:19
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