If a boy blows 18 bubbles,
Then pops 6 eats 7 and then
He pops 5 and blows 1.
How many are left?

What is red and smells like blue paint?

If 1+9+8=1, what is 2+8+9?

I am taken from a mine and shut up in a wooden case, from which I am never released, and yet I am used by almost every person. What am I?

It belongs to you, but other people use it more than you do. What is it?

There are are five things wrong with this sentence; only geniuses will be able to to spot all of the mitstakes

I am lying and I always lie. Tell me whether I am lying or telling the truth.

There once were seven dwarfs who were all brothers. They were all born two years apart. The youngest dwarf is seven years old. How old is his oldest brother?

We have shown you a regular water barrel as below. Without using any measuring device can you check if the barrel is more than half-filled or less than half-filled?

Count the number of triangles in the below picture?