I speak without a mouth, and hear without ears. I have no-body, but I come alive with the wind. What am I?

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

Who is He ?

What mathematical symbol can be put between 5 and 9, to get a number bigger than 5 and smaller than 9?

In a school, there are four subjects. Seventy percent of students study English, seventy five percent of students study Science, eighty five percent of students study Mathematics and eighty percent of students study Spanish.

Can you calculate the percentage of students that study all four subjects?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

You walk into a creepy house by yourself. There is no electricity, plumbing, or ventilation. Inside you notice 3 doors with numbers on them. Once you open the doors you will die a particular way. Door No.1 You’ll be eaten by a lion who is hungry. Door No.2 You’ll be stabbed to death. Door No.3 There is an electric chair waiting for you. Which door do you pick?

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

I know a nine-letter word having only one vowel.
Do you ?

At my favorite fruit stand,
an orange costs 18,
a pineapple costs 27,
and a grape costs 15.
Using the same logic, can you tell how much a mango costs?

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?