Four people need to cross a rickety bridge at night. Unfortunately, they have only one torch and the bridge is too dangerous to cross without one. The bridge is only strong enough to support two people at a time. Not all people take the same time to cross the bridge. Times for each person: 1 min, 2 mins, 7 mins and 10 mins. What is the shortest time needed for all four of them to cross the bridge?

Can you find the key in the picture below?

Why Aeroplane windows are round?

What Time Should the last watch show in the below figure?

A clock loses 10 minutes each hour. If the clock is set correctly at noon, what time is it when it reads 3 PM?

There is a place where if I stand up straight, I will still be considered sideways.

I am white when I am dirty, and black when I am clean. What am I?

How many cubic feet of dirt are in a hole of one foot deep, three feet long, and two feet wide?

You are in a land where thirty men and two women were dressed in classic black and white dresses.
They begin to fight as soon as any of them move.

Where are you?

How can one talk without saying a single word?