Problem-Solving and Data AnalysisEasyProbability from a drawer of socks
Problem-Solving and Data Analysis practice question
A drawer contains 4 black socks and 6 white socks. If one sock is taken out at random, what is the probability that it is white?
- A. 3/5Correct
- B. 2/5
- C. 3/2
- D. 1/6
Answer: A. 3/5
6 white socks out of 10 socks in total: 6/10 = 3/5.
Why the other answers are wrong
- B. 2/5
- 2/5 is the probability of BLACK (4/10).
- C. 3/2
- 3/2 is white over black, not white over the total — and a probability can't exceed 1.
- D. 1/6
- 1/6 would be one favourable outcome out of six; there are 6 white out of 10.
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