How Much Dirt?

How much dirt is there in a hole that measures two feet by three feet by four feet?

None. A hole doesn’t have any dirt.

Posted in Brain Teasers

Once I’m Known You Can Hit A Grand Slam

A nine-letter word with but one vowel,
After I’m used you may need a towel,
Tests can be used to learn what I am,
Once I am known you can hit a grand slam.

Strengths. It has 9 letters with only one vowel, when you use your strengths the exertion can cause you to sweat, requiring a towel, tests can identify ones strengths and once you know what they are, you can hit a metaphorical grand slam by employing them in an area of your choosing.

Posted in Riddles

A Charming Dimple

There are two meanings to me. With one I may need to be broken, with the other I hold on. My favorite characteristic is my charming dimple. What am I?

A tie.

Posted in Riddles

True, False or Confused?

Which of the following statements are true and which are false?

1. Only one of the statements is false.
2. Exactly two of the statements are false.
3. Only three of the statements are false.
4. Exactly four of the statements are false.
5. All five of these statements are false.

The only true statement is #4 and the rest are false.

Posted in Brain Teasers

A Face But No Eyes

I have a face but no eyes. Hands but no arms. What am I?

A clock.

Posted in Riddles
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Rotating Coins Around Coins

You have two coins of equal size on a table, situated end to end vertically. If you roll the top coin around the bottom coin until it returns to its original position, how many times will it have rotated?

Twice. See this video for more details.

Posted in Brain Teasers

What is the secret to this?

What is the secret to this?

A1
C1
E3
H3

What comes next?

I2.

Each entry is a letter, in alphabetical order starting with A, followed by the number of occurrences of that letter in the phrase “What is the secret to this”.

There’s one ‘a’, thus we get A1. There are no ‘b’s so it doesn’t appear, then there’s one ‘c’, and so on.

Posted in Brain Teasers

Two Three Ten Sequence

If:
2 3 = 10
7 2 = 63
6 5 = 66
8 4 = 96
9 7 = __

What is the missing number?

f(n, m) = (n + m) × n

e.g. f(2, 3) = (2 + 3) × 2 = 10

Hence, f(9, 7) = (9 + 7) × 9 = 144

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How to Save Gas

If you could chose to increase the average fuel economy of a car, which of these would save the most fuel?

1. 10mpg -> 12mpg
2. 12mpg -> 15mpg
3. 15mpg -> 20mpg
4. 20mpg -> 30mpg
5. 30mpg -> 60mpg

It turns out they all save the same amount of fuel.

If you travel 100 miles:

100 / 10 = 10 gallons used
100 / 12 = 8 1/3 gallons used

10 – 8 1/3 = 1 2/3 gallons saved

100 / 30 = 3 1/3 gallons used
100 / 60 = 1 2/3 gallons used

3 1/3 – 1 2/3 = 1 2/3 gallons saved

Posted in Brain Teasers

What’s So Funny Ethel?

Merle was checking out at the grocery store. Ethel, a friendly cashier, said the total was $63.59. He gave her a $100 bill and she began laughing as she counted out his change. Then she gave him a high five and Merle left the store chuckling.

What was so funny?

The amount of change was $36.41, which meant Ethel handed Merle one of everything in her drawer:

$20 bill
$10 bill
$5 bill
$1 bill
A quarter
A dime
A nickel
A cent
———
$36.41

Good ol’ Ethel.

Posted in Brain Teasers