You order chicken wings at KFC in the boxes of 6, 9 and 20. What is the largest number of wings that you cannot obtain by buying in any combination of the boxes?

Why Wine Glass Stem is so long?

If eleven plus two equals one, what does nine plus five equal?

Find the next number in the series

12, 20, 40, 72, 116, 172 ?

In the Chess Board picture below white army is arranged. You need to add a black army on the board such that no piece is under any threat.
Note: Army comprised of 1 king, 1 queen, 2 rooks, 2 bishops, 2 knights, and 8 pawns.

How will you measure 15 minutes using two hourglasses of 7 minutes and 11 minutes respectively?

What makes this number unique: 8,549,176,320?

What is the Surname of Barbie Doll?

A time long back, there lived a king who ruled the great kingdom of Trojan House. As a part of the renovation of the kingdom to meet future security needs, he asked his chief architect to lay down a new play in a manner that all of his 10 castles are connected through five straight walls and each wall must connect four castles together. He also asked the architect that at least one of his castles should be protected with walls. The architect could not come up with any solution that served all of King's choices, but he suggested the best plan that you can see in the picture below. Can you find a better solution to serve the king's demand?

If your uncle’s sister is not your aunt, what relation is she to you?