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प्रश्न
A box contains pairs of socks of two colours (black and white). I have picked out a white sock. I pick out one more with my eyes closed. What is the probability that it will make a pair?
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उत्तर
It can be observed that while closing the eyes, one can draw either a black sock or a white sock. Therefore, there are two possible cases.
Probability = `"Number of favourable outcome"/"Number of possible outcomes"`
Probability (a pair of white socks will be formed) = `1/2`
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