The captain of a ship was telling this interesting story: "We travelled the sea far and wide. At one time, two of my sailors were standing on opposite sides of the ship. One was looking west and the other one east. And at the same time, they could see each other clearly." How can that be possible?

Can you find out the missing number?

? 4 5 3 5

9 5 7 10 3

What runs around the whole yard without moving?

Can you make four (4) nines (9) equal 100?

This is a classy optical illusion puzzle. What more you can find except bricks in the image below?

The square root of number 121 is "11". What is the square root of the number "12345678987654321."?

There’s a one-story house in which everything is yellow. Yellow walls, yellow doors, yellow furniture. What colour are the stairs?

Can you find the company name in the pictogram below?

Using eight eights and addition only, can you make 1000?

I went to the bookshop and spent one-half of the money that was in my purse.

When I came out, I found that I had as many cents as I had dollars and half as many dollars as I had cents when I went in. Find the money in my purse when I entered the store.