This puzzle is for Harry Potter fans. Do you know why Tom Riddle is called Lord Voldemort?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

In the picture given below, can you find out which digit will take place of the question mark?

I have teeth but i don't bite. Who Am I ?

Can you decipher the two rows to find the hidden word?

Below, you can see some coding:
January = 1017
February = 628
March = 1335
April = 145
May = 1353
June = 1064
July = 1074
August = 186

Now deciphering the way it has been coded, can you find out how September will be coded?

In the following series, a set of numbers is progressing with a particular pattern. Can you deduce that pattern and find the missing set?

(2 + 6), (21 + 6), (58 + 6), (119 + 6), ___

If you’ve got me, you want to share me; if you share me, you haven’t kept me. What am I?

You and your two friends are working in a multinational company. How can you three find out the average salary of you all without disclosing your own salary to the other two?

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