I have a five and a three-gallon jar. Assuming there is an infinite supply of water, how can I measure one-gallon water?

With the help clues provided in the image, can you find the 5 digit key?

What is black when you buy it, red when you use it, and gray when you throw it away?

What does man love more than life, hate more than death or mortal strife; That which contented men desire; the poor have, the rich require; the miser spends, the spendthrift saves, and all men carry to their graves?

Find The Next Number in this series.
1, 2, 6, 42, 1806 ?

Can you circle exactly four of these numbers such that the total is twelve?

1 6 1
6 1 6
1 6 1
6 1 6

I organized a small get together at my home.
In the party , i have a barrel with some whiskey in it.

Suddenly Guest 1 say 'I bet this barrel of whiskey is more than half full'.
'No, it's less than half full' Guest 2 replied.

I don't have any measuring instrument and without removing whiskey from it , how can i determine which of the guest is right ?

Can you find the missing number in the third row?
35 20 14
27 12 18
5 2 ?

Do you know of a place where the wind blows south and then suddenly shifts direction towards the north?

Can you solve the tricky chess rebus puzzle below by ciphering the hidden meaning?