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?

Can you count the number of seconds in a year?

Clue: You need to bother about calculation.

What always comes into a house through the keyhole?

If you had a pizza with crust thickness 'a' and radius 'z', what's the volume of the pizza?

I am never scared but became petrified and can’t live in a house but would die to make one. What am I?

Can you solve the below algebraic mathematical equation?

(J+O+I+N+T)3 = JOINT

There are 3 apples in the basket and you take away 2. How many apples do you have now?

If 1+9+8=1, what is 2+8+9?

Move three sticks of the spiral below to form a square.

Find the smallest sentence with all the English alphabet.