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vredina [299]
4 years ago
12

10 POINTS!!!

Mathematics
1 answer:
Citrus2011 [14]4 years ago
8 0

pr=no:of favourable outcomes/no:of possible outcomes

no:of favourable outcomes=1

no:of possible outcomes=

c^{20_{3} =20/3(20-3)=\\17*18*19*20/2*3*17=\\18*19*20/6\\=3*19*20\\=1140\\therefore,\\pr=1/1140

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Step-by-step explanation:

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How are we supposed to answer that
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