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If you see a reflection of an analogue clock which shows 2:30, what will be the original time?

Difficulty Popularity

Nine brilliant most students were summoned by an inspecting professor. He gave them a situation and told them that he is having nine hats. The hats are either red colored or blue colored as told by the professor. He also tells them that he have at least one red colored hat and the number of blue hats are greater than the red hats.

He places one hat on each of their heads. The students are not allowed to talk with each other and no means of communication is feasible. He asks them how many hats are blue and how many are red. He gives them half an hour to deduce and moves out of the room. Nobody is able to answer when he returns back and thus he gives them another fifteen minutes. But when he returns, no one can answer again. Thus he gives them final five minutes. On returning back this time, everyone was available with an accurate answer.

How could the students have deduced the right answer? What is the right answer?

He places one hat on each of their heads. The students are not allowed to talk with each other and no means of communication is feasible. He asks them how many hats are blue and how many are red. He gives them half an hour to deduce and moves out of the room. Nobody is able to answer when he returns back and thus he gives them another fifteen minutes. But when he returns, no one can answer again. Thus he gives them final five minutes. On returning back this time, everyone was available with an accurate answer.

How could the students have deduced the right answer? What is the right answer?

Difficulty Popularity

A room has three light switches. The light switches are located outside the room with a closed door. Only one of them is the actual switch that can control the lights inside the room. You are allowed to turn those switches as many times as you wish. Please note that you can't identify from outside whether the lights are on or off.

You can enter the room only once to see the light. You can't change the light switches once you are inside. Rule out all the illogical answers like there is a window in the room or someone inside can help you with the answer etcetera.

Based on what information and guidelines have been provided to you, can you determine the exact switch that controls the light inside the room?

You can enter the room only once to see the light. You can't change the light switches once you are inside. Rule out all the illogical answers like there is a window in the room or someone inside can help you with the answer etcetera.

Based on what information and guidelines have been provided to you, can you determine the exact switch that controls the light inside the room?

Difficulty Popularity

Two men and seven women complete a file work in four days. Four men and 4 women complete the same file work in just 3 days.

How much time will one man take to complete the same file work?

How much time will one man take to complete the same file work?

Difficulty Popularity

You are a builder who is building a new society. You are required to build four buildings that are equidistant from each other which means the distance from each building to the other must be equal.

You have read that only three points can be equidistant from each other. How can you complete the assignment as required?

You have read that only three points can be equidistant from each other. How can you complete the assignment as required?

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