Can you solve this amazing hard number series problem?
7, 8, 10, 12, 16, 18 ?

What is the next number in this series?

4,12,84,3612....

John went to meet his friend Jacob, but when he was about to reach the main gate, John notices that Jacob had a mighty dog who was fastened to the tree. The chain is long enough that it allows the dog to reach the main gate.

How can the John reach the main gate?

There are two dice with empty faces in front of you and a marker. You can mark any number on each of the faces of the two dice, but you have to display all 31 days of the month using the two of them.

Which numbers will you mark on which dice so that you can easily depict all the dates of the month?

I have one of the three numbers: 1, 2, or 3 in my mind. I speak only truth. You can ask me just one question for which I will only reply in yes or no or don't know. What question will you ask from me so that you are able to know the number?

Can you complete the sequence?

192, 021, 222, 324, 252, 627, 2__, 9__?

Can you find the next number in the below sequence
3 , 7 , 10 , 11 , 12 , 17 ?

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

A chess tournament is taking place on knock-out terms (the one who loses the match is out of the game).
(a) If 10 matches are played in total, how many players participated?
(b) If 20 players took part in the tournament, how many matches were played?

An old Woman left INR 33,333 to be divided equally among two fathers and two sons and each was to receive INR 11,111.
How was this possible?