Replace the question mark with the number below given a simple math problem.

The measurement of time, That can't be found on a clock, But can be looked upon on a map.

Who is He ?

When it is alive we sing, when it is dead we clap our hands. What is it?

I shave every day, but my beard stays the same. What am I?

Considering the below equation:

V + II - VI = 10
IV - X + VIII = 20
IV - VII + VI = 30

Then, I + II + III = ?

Consider this: Arnold Schwarzenegger has a big one. Michael J. Fox has a small one. Prince doesn’t have one. The Pope has one but never uses it. Bill Clinton has one and uses it all the time. What is it?

Can anyone tell me a word in the English dictionary which has a silent 'z'?

How many triangles can you count in the figure given?

What is the fewest number of coins that would be required in order to make sure each and every coin touches exactly three other coins?

You are on a Boat in the mid of a river. You have two cigarettes with you. One of these two you have to light, how will you light the cigarette?