It is known that 10% of all clothing bought online is returned. If an online retailer sells 20 items of clothing, what is the probability at least 2 items are returned?

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Ответ:

OnlyaBurden

22.06.2020

Mathematics

Step-by-step explanation:

2x+1=4x-3

2x-4x=-3-1

-2x=-4

$\frac{-2x}{-2}=\frac{-4}{-2}$

x=2

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