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?

Christina has four daughters, and each of her daughters has a brother. How many children does Christina have?

Find the missing number in the sequence below:

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Can you write down eight eights so that they add up to one thousand?

Can you find the odd number in the following?

2716, 4135, 5321 and 7145

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

O_er_t_o_

Complete the missing letters of the given word.

Find the next number in the following series:
6, 14, 26, 98, __?

What four weights can be used to balance from 1 to 30 pounds?