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

What does this mathematical rebus means ?

Select from the four options below!

a) Geneva, Switzerland
b) New York City, USA
c) Paris, France
d) London, England

Which is faster, Heat or Cold ? Explain.

What has no start, end, or centre?

Two batsman each on 94 runs. Seven runs needed to win in last 3 balls. Both make 100*. How?

A person was killed at a house party. When the police arrive, there are six people present in the house who are the friends of the victim. The name of the friends is Rohit, Aman, Nick, Gagan, and Randy.

Near the dead body, they find a few numbers written with blood by the victim on the floor. The numbers are 8, 5, 4, and 11.

The police arrests one of the friends for the murder. Whom did they arrest and why?

In a certain country ½ of 5 = 3. If the same proportion holds, what is the value of 1/3 of 10?

I had an infinite supply of water and 5 litres and 3 litres jars.

How would you measure exactly 4 litres in the least number of steps?

How many triangles are there in the picture below?