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Mathematics 7 Online
OpenStudy (anonymous):

How many different ways can you choose 3 vowels out of the box, if there are 5 vowels in the box and order does not matter. A.10 B.15 C.30 D.60

OpenStudy (amistre64):

i find it tends to be easier to determine when order matters, then divide off the excess. (5P3)/3!

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