If a person who does not know typing is asked to type the manuscript of a book, the probability of the event that he will type it correctly without any mistake is ....
MH SET - 2025, SET Exam - 2025,
Answer: B
The probability is 0.
The question describes an impossible event. A person who cannot type at all has no realistic chance of typing a whole book's manuscript without a single mistake, so the event is treated as impossible, and the probability of an impossible event is 0.
A probability of 1 is for a certain event, the opposite case. Fractions such as 3/4 and 2/3 would mean the person usually succeeds, which contradicts the premise that he does not know typing. The question is a standard illustration that probability ranges from 0 (impossible) to 1 (certain).
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