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

You throw me out when you want to use me and you take me in when you don't want to use me.

Who Am I?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

What work can one never finish?

I look at you, you look at me, I raise my right, you raise your left. What am I?

There are three boxes which are labeled as Rs100, Rs150, and Rs200. One box contains two notes of Rs. 50. The second box contains one note of Rs50 and one note of Rs100 The third box contains two Rs. 100 notes. All boxes are labeled incorrectly.

What is the minimum number of boxes you must check in order to label all boxes correctly?

It is raining today at 11:59 am. What is the probability of sunny weather after 72 hours?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

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?

Place the numbers from 1 to 9 in the circles in a manner that each side of the triangle sums up to 17.