What comes
Once in a Year
Twice in a Month
4 times in a Week
6 times in a Day

You are presented with three boxes. One of them has a red ball inside and the other two have a black ball inside each of them. You are asked to pick up the one with red ball and you pick one. Now, one of the other boxes is opened and it is found to have a black ball.

You are presented with a chance to change your box with the one that is left closed. Will you change your box? Why or why not?

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

I possess a head

I flaunt a tail

But I don't have mouth or legs

Can you find out who I am?

Intelligence Agency need to break the vault but the problem is that they are not able to break the vault.

On the vault, a text is written as:

31 11 33 33 43 45
21 25
31 24 11 31 51 41

To Break the code Intelligence Agency brings a mathematician named Joseph.
Minutes later he deciphers the code.

Whats the code?

Which is the correct shadow of the bird?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

Replace the 'X' with any mathematical symbol to make the expression equal to 111.

18 X 12 X 2 X 3 = 111

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?

If you say my name, I will no longer exist. What am I?