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Question

A bag contains 7 black socks, 12 white socks, and 17 red socks. If you pick one sock at random from the bag, what is the probability that it will NOT be white?

A
12
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B
23
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C
34
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D
712
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E
736
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Solution

The correct option is C 23
Total number of socks in bag=7+12+17=36
So total number of possible outcomes =36
The event socks is not white means that socks is either black or red,so the number of favorable outcomes will be
Number of black socks + number of red socks =7+17=24.
Therefore, P(not white)=2436=23

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