A beggar on the street can make one cigarette out of every 6 cigarette butts he finds. After one whole day of searching and checking public ashtrays the beggar finds a total of 72 cigarette butts. How many cigarettes can he make and smoke from the butts he found?

Can you name an animal whose killing cannot be performed without spilling your own blood?

In a football game, Christina defeated Teresa by 2 - 0 but no man from either side scored. How can this be possible?

I have teeth but i don't bite. Who Am I ?

It's pretty hard to give up.
If you remove a part of it, you will be left with a bit.
Even if you remove another part, the bit still remains.
Remove one more and it still remains.

What is it?

why number 8549176320 is one of a kind?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.

A doctor and a boy were fishing. The boy was the doctor’s son, but the doctor was not the boy’s father. Who was the doctor?

What word is represented by this rebus?

Below, you will find the mathematical proof that 10 equals 9.99999?. But is that possible or there is something wrong about it? Can you find the error?

x = 9.999999...
10x = 99.999999...
10x - x = 90
9x = 90
x = 10