What always comes into a house through the keyhole?

Two friends decide to get together; so they start riding bikes towards each other. They plan to meet halfway. Each is riding at 6 MPH. They live 36 miles apart. One of them has a pet carrier pigeon and it starts flying the instant the friends start traveling. The pigeon flies back and forth at 18 MPH between the 2 friends until the friends meet.

How many miles does the pigeon travel?

A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

Readers with the sharpest vision can find the eagle in the mountains in 6 seconds. Are you one of them? Test your observation skills now!

There is a box. The area of its top is 240 square units, the area of the front is 300 square units and the area of the end is 180 square units.

Can you calculate the dimensions of this box with the given data?

A car key is hidden in the picture. Can you spot it.? Quickly test your eye power now!

Find the missing letter in the last circle logically in the given below picture.

Replace the question mark with the correct number.

Take away the whole and some still remain. What is it?

If eleven plus two equals one, what does nine plus five equal?