If eleven plus two equals one, what does nine plus five equal?

Manish and Manoj play 5 games of chess.
Both Manish and Manoj win the exact same number of games. There is no tie at all.

How?

What four weights can be used to balance from 1 to 30 pounds?

One evening there was a murder in the home of a married couple, their son and daughter. One of these four people murdered one of the others. One of the members of the family witnessed the crime.

The other one helped the murderer.

These are the things we know for sure:

1. The witness and the one who helped the murderer were not of the same sex.

2. The oldest person and the witness were not of the same sex.

3. The youngest person and the victim were not of the same sex.

4. The one who helped the murderer was older than the victim.

5. The father was the oldest member of the family.

6. The murderer was not the youngest member of the family.

Who was the murderer?

Find the missing number in the sequence below:

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

Can you convert the number zero(0) into a positive number using just one mathematical operator ?

My thunder comes before the lightning; my lightning comes before clouds; my rain dries all the land it touches. What am I?

Before Mount Everest was discovered, what was the highest mountain in the world?

Can you find the missing piece of the Porsche?