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

Can you count the number of triangles in the given figure?

A famous swimmer can swim downstream in a lake in exactly 40 minutes with the lake current.
He can swim upstream in that lake in exactly 60 minutes against the lake current.
The length of the lake is 2 km.

How long he can cover the distance of one side at a still lake with no current?

How many times can you subtract the number two from the number fifty?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

John said, "If yesterday was tomorrow, today would be Friday."

When did John make this statement?

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

If you drop me I’m sure to crack, but give me a smile and I’ll always smile back. What am I?

Which is the rope you never skip with?

What does Alexander the Great and Winnie the Pooh have in common?