I am white when I am dirty, and black when I am clean. What am I?

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

A girl was sitting in her hotel room when she heard a knock on the door. She opened the door and found that a man was standing outside.
The man said, "Oh! I am really sorry, I thought this was my room."
He then walked through the corridor to the elevator. The girl did not know the man. She closed her door and called security asking them to apprehend the man.
What made her suspicious of that man? He might have been genuinely mistaken.

By including only four matchsticks in below picture, you have to make "Four Triangles And Two Squares"

Move three sticks of the spiral below to form a square.

Solve the equation in the image by looking at the pattern closely.

There was a blind beggar living on the footpath of a street. Suddenly one day, the beggar's brother died. What was the relation of the blind beggar with the person who died?

PS: Brother is not the answer.

Take away my first letter, then take away my second letter. Then take away the rest of my letters, yet I remain the same. What am I?

Which city is three-fifths chick two third cat and 50% goat?

Can you identify the famous TV character from the rebus below?