What is in seasons, seconds, centuries and minutes but not in decades, years or days?

What building has the most stories?

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?

What is the word or phrase below?
R | E | A | D

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

What can go through glass without breaking it?

What is the below Rebus indicate?

What does the below rebus riddle means?

If,

20 % 5 = 24

21 % 7 = 33

42 % 6 = 67

Then;

66 % 6 = ?

Once while in his court, King Akbar asked Birbal to write something on a wall that makes one sad when read in good times and makes one happy when read in sad times.

He took only a few moment and wrote something that fit the requirements. What did he write?