Pints of beer

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?




Similar Logic Riddles

You are an expert on paranormal activity and have been hired to locate a spirit haunting an old resort hotel. Strong signs indicate that the spirit lies behind one of four doors. The inscriptions on each door read as follows:

Door A: It's behind B or C
Door B: Its behind A or D
Door C: It's in here
Door D: It's not in here

Your psychic powers have told you three of the inscriptions are false, and one is true. Behind which door will you find the spirit?

Asked by Neha on 23 Oct 2023


There was a minor accident with a doctor's son but the doctor noticed no major injury. After the treatment, the father of that doctors son is sitting with the son of the doctor without the doctor being in the room.

How can this be possible?

Asked by Neha on 02 Feb 2025

Vin Diesel is pulling a theft and has planned to run away with all the cash kept in the safe. But the only way to open the safe is the 13 character password. He has a set of five clues given to him by a trustworthy source.

Exactly two of the below statements are false.
The password is contained within this sentence.
The password is not in this hint.
The password is within only one of these statements.
At least one of the above statements is a lie.

Asked by Neha on 01 Jun 2023


One is to three as three is to five and five is to four and four is the magic number.
What is the pattern?

Asked by Neha on 04 Oct 2021

I know a 5-digit number having a property that With a 1 after it, it is three times as large as it would be with a one before it.

Guess the number?

Asked by Neha on 06 Apr 2025

Find The Missing Number In the Sequence.
6 25 64 ? 32 1

Asked by Neha on 07 Nov 2024


1. What does:
TIM JOB
represent?

2. What does:
MO_ _
represent?

Asked by Neha on 21 Feb 2025

Six people park their car in an underground parking of a store. The store has six floors in all. Each one of them goes to a different floor. Simon stays in the lift for the longest. Sia gets out before Peter but after Tracy. The first one to get out is Harold. Debra leaves after Tracy who gets out on the third floor.

Can you find out who leaves the lift on which floor?

Asked by Neha on 24 Dec 2024

In The Image Below Which clock is the odd one out?

Odd One Out Clock

Asked by Neha on 26 Jun 2026


Which number should replace the question mark?

Triangular Logic

Asked by Neha on 11 Aug 2023

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Crossword puzzles

In the 1920s, people feared that crossword puzzles would contribute to illiteracy.