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Virty [35]
4 years ago
9

Please in desperate Evaluate C(20, 18).

Mathematics
1 answer:
laila [671]4 years ago
6 0
\bf _nC_r=\cfrac{n!}{r!(n-r)!}\qquad 
\begin{cases}
n=20\\
r=18
\end{cases}\implies _{20}C_{18}=\cfrac{20!}{18!(20-18)!}
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The ratio of teachers to students at Priory School is 2:27
Rzqust [24]

Answer:

609

Step-by-step explanation:

ratio of teachers to students at Priory School =2:27

Let X= total number of both the students and the teacher

Ratio of teacher=( 2/29)X

Ratio of student is (27/29 )X

But total number of teacher = 42

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4 years ago
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3 years ago
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sergij07 [2.7K]

Answer:

3.9 - C

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3 0
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There are 23 red shirts and 16 white shirts they will be put onto shelves in piles of 8 how many shirts will not fit evenly into
Mama L [17]

Given :

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