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?

Find the next number in the sequence

1, 2, 6, 21, 88, __?

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?

O_er_t_o_

Complete the missing letters of the given word.

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

Why is 6 afraid of 7?

We are a group of eight brothers. We consider the weak, yet we protect the king in every battle. If we move ahead, we never turn back. Who are we?

The more of this there is, the less you see. What is it?

A new clothing store has a unique method of pricing items. A vest costs $20, a tie costs $15, a blouse costs $30, and underwear costs $45. How much would pants cost?

Who is that with a neck and no head, two arms and no hands? What is it?