The first box has two white balls. The second box has two black balls. The third box has a white and a black ball.

Boxes are labeled but all labels are wrong!

You are allowed to open one box, pick one ball at random, see its colour and put it back into the box, without seeing the colour of the other ball.

How many such operations are necessary to correctly label the boxes?

By using 'because' continuously three times, can you make an English statement ?

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

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

Create a number using only the digits 4,4,3,3,2,2,1 and 1. So i can only be eight digits. You have to make sure the ones are separated by one digit, the twos are separated by two digits the threes are separated with three digits and the fours are separated by four digits

We have four gears with below features=> Both Gear A and D has 60 teeth=> Gear B has 40 teeth=> Gear C has 20 teeth=> Every two minutes, Gear B makes 25 full turns.What is the relative speed of Gear A and Gear B?

Which point will the car reach to go out?

Find the next number in the following series:
6, 14, 26, 98, __?

I cannot talk, but I always reply when spoken to. What am I?

Why is a river so rich ?