Solve the alphametic puzzle by replacing the alphabet with the number.

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You are in a room that has three switches and a closed door. The switches control three light bulbs on the other side of the door. Once you open the door, you may never touch the switches again. How can you definitively tell which switch is connected to each of the light bulbs?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.

What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see? What is it?

Identify the 10 differences between the two given pictures.

Why do you find that most of the buildings are deprived of the 13th floor?

Sachin bought a car with a strange 5 digit numbered plate.The water image of the number is 78633 more than my car number. All the digits of car number are distinct.

What is the original number on number plate?

Can you name some countries which do not have the alphabet 'A' in them?

If two's company, and three's a crowd, then whats four and five ?