Once a Minute, Twice in a Moment

What comes once in a minute, twice in a moment but not once in a thousand years?

The letter “m”.

Posted in Riddles

Four Cards

Four cards are placed in front of you on the table, each with a number on one side and a color on the other. The visible cards show 3, 8, red and brown. Which cards should you turn over in order to test the truth of the statement that if a card shows an even number on one face, then its opposite face is red?

four-cards

You’d need to turn over only the 8 and brown card. Only a card with an even number on one face and which is not red on the other face can invalidate the stated rule. If you turn over the 3 card and it’s not red, it doesn’t invalidate the rule, nor does turning over the red card and finding it has the label 3.

This test was devised by Peter Cathcart Wason and is known as the Wason selection task. Less than 10% of test subjects got it correct in two separate studies.

Posted in Brain Teasers

Takeoff On a Conveyor Belt

If a plane sits on a conveyor belt whose speed matches that of the plane in the opposite direction, can the plane take off?

Yes, because a plane’s wheels roll freely and have no affect on the movement of the plane(unlike a car). The propeller or jet engine makes the plane move and the plane will be able to take off normally. If you don’t believe me, here’s proof.

Posted in Brain Teasers

I Widen My Jaws

I flex my jaws when you use me,
My only purpose is to damage,
Yet I’m used by small children.

What am I?

Scissors.

Posted in Riddles
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I Belong To Everyone

I belong to everyone. Sometimes I make you happy, sometimes I make you sad. I will never end until the day you do.

Your thoughts.

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I Am A Word Of Meanings Three

I am a word of meanings three.
Three ways of spelling me there be.
The first is an odour, a smell if you will.
The second some money, but not in a bill.
The third is past tense, a method of passing things on or around.

Can you tell me now, what these words are, that have the same sound?

Scent, cent, sent.

Posted in Riddles

Howard’s Football Game

In 2014, Howard returned from his football game later than normal and Trudy, his Mom, was concerned. She asked what position he played, and he said he was a lineman. She asked what team they played and he said the Bears. She asked if anything strange had happened, and he said no. She asked what the score was and he said their team won, 14-1. Satisfied, Trudy sent Howard up to bed. The next morning Trudy told her husband Mick about her conversation with Howard. Mick’s face turned red and he stormed up to Howard’s room.

Why was Mick mad?

Mick knew Howard was lying about being at the football game because in American football it’s impossible to score just 1 point (before the 2015 one-point safety rule). A score of 2 is the lowest possible score (awarded for a safety). In fact, 1 is the only impossible score in football. You can score 2 points for a safety, 3 points for a field goal and 6 points for a touchdown, with an extra point for the field goal. You also have the option to go for another touchdown for a 2-point conversion. With 2, 3, 6 and 7 you can generate any other number except for 1.

For example, here are ways a team could score from 2 to 10 points.
2 = safety
3 = field goal
4 = 2 + 2
5 = 3 + 2
6 = touchdown
7 = touchdown and extra point attempt
8 = touchdown and two point conversion
9 = touchdown and field goal
10 = touchdown, extra point attempt and field goal

Posted in Brain Teasers

A Fruity Series

What is the next letter in this fruity series?

a a a p p ?

Y.

The series consists of the letters of papaya in alphabetical order.

Posted in Brain Teasers

The Secret of the Chalk Emerald

A dear old relative passed away recently and her family gathered for the reading of the will. The final item was the Chalk Emerald, a priceless gem. The will bequeathed it to whoever determined where it was hidden. The only clue was it was in a cylinder surrounded by a thousand squares. A young lass of barely six immediately piped up saying she knew where it was hidden and she was correct. Where was the hiding place?

In a roll of toilet paper.

Mark suggested two alternative solutions: A cylindrical chimney or a well, the squares being the bricks. Although most bricks aren’t square, it’s conceivable I guess.

Posted in Brain Teasers

Run Smoother Than Any Rhyme

What runs smoother than any rhyme, loves to fall but cannot climb?

Water

Posted in Riddles