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?

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

A new Engineering building containing 100 offices had just been completed. John was hired to paint the numbers 1 to 100 on the doors. How many times will John have to paint the number nine (9)?

Things are just as they seem, right? Well, check again.
Can you count the number of tigers in this picture ?

How can you tell a raw egg from a hard-boiled egg?

Why do we preferably have round manhole covers and not square ones?

A man always keeps a spare tyre in his car. To make full use of all the five tyres, he changes the tyres in a manner that for a distance of 1, 00,000 km, each of them runs the same distance.

Can you calculate the distance travelled by each tyre on that journey?

When we see 2 but call 10?

what does the below rebus means?

The more you take me, the more you leave me behind.
Who Am I?