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sergey [27]
3 years ago
7

the names of nine boys and two girls are in a hat. what is the probability of first drawing a girls name and then a boys name fr

om the hat
Mathematics
2 answers:
lara [203]3 years ago
5 0
18/121 shoul be the answer
krok68 [10]3 years ago
4 0
<h2>Answer:</h2>

The  probability of first drawing a girls name and then a boys name from the hat is:

                \dfrac{9}{55}

<h2>Step-by-step explanation:</h2>

It is given that:

The names of nine boys and two girls are in a hat.

This means that the total number of names in the hat are: 9+2=11.

Also, the probability of first drawing a girls name and then a boys name from the hat is given by:

Probability of drawing a girl name×Probability of drawing a boy name.

Also, the drawing of names is done without replacement.

Hence, we get probability as:

=\dfrac{2}{11}\times \dfrac{9}{10}\\\\=\dfrac{9}{55}

The probability is:  \dfrac{9}{55}

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brilliants [131]

There are 8008 groups in total, in other to drive the children

<h3>How to determine the number of groups?</h3>

From the question, we have

  • Total number of children, n = 16
  • Numbers to children at once, r = 6

The number of group of children that could be carried at once is calculated using the following combination formula

Total = ⁿCᵣ

Where

n = 16 and r = 6

Substitute the known values in the above equation

Total = ¹⁶C₆

Apply the combination formula

ⁿCᵣ = n!/(n - r)!r!

So, we have

Total = 16!/10!6!

Evaluate

Total = 8008

Hence, the number of groups is 8008

Read more about combination at

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8 0
1 year ago
(85 x 255) / 289 + 15 - 70 =
ANEK [815]
I do believe its twenty

5 0
3 years ago
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36 ÷ 3^2 +4*2-1<br> can u help me get the answer?
spin [16.1K]
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George bought a rose bush at retail for $24. The wholesale price was $15. What was the markup?
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Answer:

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Step-by-step explanation:

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Have a nice day!

6 0
3 years ago
What is the value of x if a² + ax - 10 is divided by a-2?<br><br>help with computation po​
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Answer:

x = 3

Step-by-step explanation:

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2 years ago
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