When my father was 31 I was 8. Now he is twice as old as me. How old am I?

How can a man go eight days without sleep?

Find the number of squares in the below picture

Which digit occurred maximum times between the number 1 and 1000?

If in a code language, DISTANCE is written as IDTUBECN and DOCUMENT is written as ODDVNTNE, the how will THURSDAY be coded as in the same language?

Which word does the below Plexor means ?

A detective visits his friend John just to discover that John's neighbour Dr Jacob was murdered. Dr Jacob, who is a mathematician wrote the murderer's name in a code word "Hcqtfz". There were five suspects
1. Ajit
2. Pankaj
3. Ganpat
4. Deenu
5. Hariya

The Detective was instantly able to find the murderer.
Can you?

Solve below rebus puzzle?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

What's the next in the series?

H, Be, F, S, Mn, Kr, In, Gd, Tl, ?