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Ksju [112]
3 years ago
12

Kevin is trying to find a brown sock in his drawer. He has 16 white socks, 4 brown socks, and 6 black socks. What is the probabi

lity that he pulls out either a black or white sock, puts it back and then pulls out a brown sock?
Mathematics
1 answer:
Scrat [10]3 years ago
3 0
<h3>The probability that he pulls out either a black or white sock, puts it back and then pulls out a brown sock is (\frac{22}{169} )</h3>

Step-by-step explanation:

Here , as given the total number of:

White Socks  = 16

Brown Socks = 4

Black socks  = 6

So, the total number of socks in the drawer   = 16 + 4 + 6 = 26 socks

Now, the probability of picking a sock either a black or white sock is

= \frac{\textrm{Total number of black + white sock}}{\textrm{The total number of socks}}  = \frac{16+6}{26}  = \frac{22}{26}  = \frac{11}{13}

Also, the picked sock is <u>replaced</u>. So, now the total socks are same = 26.

the probability of picking a brown sock is

= \frac{\textrm{Total number of brown sock}}{\textrm{The total number of socks}}  = \frac{4}{26}  = \frac{2}{13}

Now, since both events are <u>independent events</u> , so the combined probability is given as:

P (E) = (\frac{11}{13} )\times (\frac{2}{13} ) = (\frac{22}{169} )

Hence, the probability that he pulls out either a black or white sock, puts it back and then pulls out a brown sock is (\frac{22}{169} )

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Hope this helps :)

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