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Category Archives: Funny

7 Awesome Inventions You Never Knew Existed


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What is the time?

This Dudeney puzzle provides a fun challenge. If you add one quarter of the time from noon until now to half the time from now until noon tomorrow, you will get the time exactly.

What is the time??


Answer: Regula Falsi works nicely for this puzzle. Say it’s 8pm. Then a quarter of the time from noon is 2hrs, and a half of the time to the following noon is 8hrs. The total is 2hrs too much. Try 9pm, giving you 2.25hrs before and 7.5hrs after. that’s 9.75hrs, or 45 minutes too much. So an hour extra is worth 1.25hrs, you need to decrease the gap by 0.75hrs. 0.75/1.25 is 0.6 or 36 minutes. The time is 9.36pm. A quarter of the time from noon is 2h 24m, and half the time to next noon is 7h 12m, or 9h 36m.

Source: Greatest Puzzles

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Why is a baby like a diamond?

Because it’s such a dear little thing.


Doctor: Have you taken the box of pills I gave you?

Oswald: Yes, but I feel worse. Perhaps the cardboard disagreed with me.


Teacher: How many days of the week begin with the letter T?

Sidney: Four: Tuesday, Thursday, Today and Tomorrow.


Teacher: Why does the earth turn round the sun?

Smiffy: Because it doesn’t want to get toasted on the side.


Diner: Waiter, what on earth is this in my bowl?

Waiter: It’s bean soup.

Diner: I don’t care what it’s been, what is now?


Mum: You can’t come in the house unless your feet are clean!

Minnie: They are clean, Mum. It’s only my shoes that are dirty!


Patient: Doctor, I think I’m a hi-fi system!

Doctor: Well, you certainly are a loud speaker.

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The Greatest Puzzles Ever Solved – The Newton – Pepys Problem

In 1963, famous English public servant and diarist Samuel Pepys entered into correspondence with Isaac Newton, the father of physics.

The topic under discussion related to a wager that Pepys wanted to know which of three dice rolls had the greatest odd of success. These were to roll six dice and get at least one 6, to roll twelve dice and get at least tho 6s, and to roll eighteen dice and get at least three 6s.

Wich is more likely?


Answer: Pepys’ intuitive suspicion was that the largest roll was the easiest. It’s not the case, though. You are more likely to make the six-die roll. Newton pointed our that you could imagine the 12-die roll as two sets of the 6-die roll, and the 18-die roll as three sets.

To make the 6-die set, you only have to achieve success once. The other sets effectively require you to make the roll more than once. The relative probabilities aren’t that simple – you can roll more than 3 sixes in the 18-die roll, at which point you can’t quite keep the principle holding true. The 6-die roll has a 0.66 chance, the 12-die roll a 0.62 chance, and the 18-die roll a 0.60 chance.

Source: The Greatest Puzzles Ever Solved

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Mathematical truth



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The candy bars problem



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Pythagoras updated



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