A maths symbol is hidden in the below Bar Graph. Can you decipher it?

Which tank will fill first?

A king sentenced a man to the death sentence for some crime he had committed. Known for his kindness, the king told the culprit that he had a choice to die in a way he decides.

The culprit was clever and said something that saved him from death. What method do you think he must have chosen for his death?

John has eleven friends. He has a bowl containing eleven apples. Now He wants to divide the eleven apples among his friends, in such a way that an apple should remain in his bowl.
How can He do it?

What can go up a chimney down, but can’t go down a chimney up?

Find the next number in the sequence

5 12 24 36 ?

A plane crashed between the border of Mexico and America. Where do you bury the survivors?

Is the statement valid that it does not matter how much older a sibling is, eventually the younger one will be half as old as the older one?

An infinite number of mathematicians are standing behind a bar. The first asks the barman for half a pint of beer, the second for a quarter pint, the third an eighth, and so on. How many pints of beer will the barman need to fulfill all mathematicians' wishes?

John can fit six large chocolate boxes or nine small chocolate boxes into a carton. How many cartons will he require to put sixty-six chocolate boxes into?