What is the Surname of Barbie Doll?

During which month do people sleep the least?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

What is red and smells like blue paint?

Cristina was born in 1888. She just had her 30th birthday today how did that happen?

The two towns are exactly 100 km apart. John leaves City A driving at 30 km/hr and Jacob leaves City B half an hour later driving at 60 km/hr. Who will be closer to City A when they meet?

What word is pronounced the same if you take away four of its five letters?

Why are all black people so quick ?

Which digit occurred maximum times between the number 1 and 1000?

No matter how little or how much you use me, you change me every month. What am I?