3 years ago

PERR AMD A PEERN2 SJE

Mathematics

2 answers:

saw5 [17]3 years ago

7 0

Answer:

Three? Is it three?

Step-by-step explanation:

Alla [95]3 years ago

4 0

Answer:

3 peers

Step-by-step explanation:

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ycow [4]

Answer: B. 350.

Step-by-step explanation:

Given: Total number of fluorescent colors = 7

Total number of pastel colors = 5

Since , he want three fluorescent colors and two pastel colors.

Number of ways to select r things out of n things = $^nC_r=\dfrac{n!}{r!(n-r)!}$

Number of ways to choose colors = $^7C_3\times\ ^5C_2$

$=\dfrac{7!}{3!4!}\times\dfrac{5!}{2!3!}\\\\=\dfrac{7\times6\times5\times4!}{3\times2\times1\times4!}\times\dfrac{5\times4\times3!}{2\times3!}\\\\=350$

Hence, the correct option is B. 350.

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Dafna1 [17]

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2 years ago

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Marina86 [1]

Answer:

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