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This is a popular probability puzzle in which you have to select the correct answer at random from the four options below.
Can you tell, whats the probability of choosing correct answer in this random manner.
1) 1/4
2) 1/2
3) 1
4) 1/4
And the correct answer is......
What was the question?
It can't be 1/4 as 1/4 appears 2 times in given 4 options as probability of correct answer when random selection of option in that case would be 2/4 = 1/2. This will be contradiction.
It can't be 1/2 either since the probability of the 1 correct answer out of 4 available options on random selection would be 1/4. That will be contradiction again.
It can't be 1 too as again probability of the 1 correct answer out of 4 available options on random selection would be 1/4. Once again this is contradiction.
Hence, the probability of the 1 correct answer out of 4 available options on random selection would be 0.