3 years ago

5765865876+5737555586=

Mathematics

1 answer:

Stells [14]3 years ago

5 0

Answer:

5765865876+5737555586=11503421462

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D. 0.821

Step-by-step explanation:

A probability is the number of desired outcomes divided by the number of total outcomes.

The combinations formula is important to solve this question:

$C_{n,x}$ is the number of different combinations of x objects from a set of n elements, given by the following formula.

$C_{n,x} = \frac{n!}{x!(n-x)!}$

Desired outcomes

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At least 3 girls.

3 girls

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4 girls

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$D = 30+15+1 = 46$

Total outcomes

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Probability

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So the correct answer is:

D. 0.821

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