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horrorfan [7]
3 years ago
10

The area of circle Z is 64.What is the value of r

Mathematics
1 answer:
anzhelika [568]3 years ago
7 0
About the square root of 20
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In how many ways can 6 competitors finish a race assuming there are no ties?In how many ways can we sit n people on r &lt; n cha
VLD [36.1K]

Answer:  a) 720, b) ^nC_r=\dfrac{n!}{(n-r)!r!} c) 336, d) 30240 e) 120.

Step-by-step explanation:

Since we have given that

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We need to find the number of ways that 6 competitors can finish a race and there are no ties.

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so, the number of ways we can sit n people on r<n chairs is given by

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Gold, silver, bronze.

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Number of different 3 person committee that are selected from 10 people is given by

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