Q:
Asha is a honest girl who never lie to anyone.
She thinks of a number among 10, 20 and 30.
You can ask her one yes/no question.
She will answer Yes, No or I don't know.
Which question you will ask to identify exactly what number she is thinking of?
Answer:
You will ask, Is the number you are thinking, greater than 20?
If she replied Yes, then the number is 30.
If she replied No, then the number is 10.
If she replied I don't know, then the number is 20.
Asha is a honest girl who never lie to anyone.
She thinks of a number among 10, 20 and 30.
You can ask her one yes/no question.
She will answer Yes, No or I don't know.
Which question you will ask to identify exactly what number she is thinking of?
Answer:
You will ask, Is the number you are thinking, greater than 20?
If she replied Yes, then the number is 30.
If she replied No, then the number is 10.
If she replied I don't know, then the number is 20.
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