The person who makes it has no need for it; the person who buys it has no use for it. The person who uses it can neither see nor feel it. What is it?

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

A pack of cards has 40 cards. You are blindfolded. Out of 40, 25 cards are facing down while 15 are facing up. You have been asked to divide this pack of cards into two decks - so that each deck contains an equal number of face-up cards. Remember, you are blindfolded.

How will you do it?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

Can you find a seven digit number which describes itself. The first digit is the number of zeros in the number. The second digit is the number of ones in the number, etc. For example, in the number 21200, there are 2 zeros, 1 one, 2 twos, 0 threes and 0 fours.

Can you find the missing letter in the sequence?
S - T - I - L - ? - T - F - Y - C

How can you take 2 from 5 and leave 4?

Rectify the following equality 101 - 102 = 1 by moving just one digit.

John is the son of Jacob.
So,
Jacob is the_____of John's father?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?