What numbers should go on the bottom line?
3 6 9 15
8 2 10 12
11 8 19 27
19 10 29 39
? ? ? ?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

I know a ten-letter word in the English language which can be typed using only the top rows of the computer keyboard.

What does this rebus riddle means ?

Three friends named Mr. Black, Mr. Yellow and Mr. Green enter a pub on a weekend night. They are wearing either a Black, Yellow or Green shirt.

Mr. Yellow says to them, 'Did you notice that we all are wearing different color shirts than our names?'

To this, the man who was wearing the Green shirt said. 'Wow, thats right.'

Can you identify who is wearing which colour shirt ?

In 1990, a person is 15 years old. In 1995, that same person is 10 years old. How can this be?

Can you arrange the six given marbles in a manner that each one of them is touching all four marbles of different colours?

What are the five permanent members of the UN Security Council?

a) France, Germany, Italy, Japan, United Kingdom
b) Canada, Mexico, Saudi Arabia, Turkey, United Arab Emirates
c) Brazil, India, Nigeria, South Africa, South Korea
d) China, France, Russia, United Kingdom, United States

Replace The Question Mark Below With the Correct Number.

2 {38} 3
4 {1524} 5
6 {3548} 7
8 {????} 9

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?