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kari74 [83]
3 years ago
15

In how many ways can you select two people from a group of 20 if the order of selection is not important?

Mathematics
1 answer:
Svetllana [295]3 years ago
3 0
That is 20C2 The number of combinations of 2 from 20 

= 20 * 19 / 2*1  = 190 answer
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