Marble Walls White as Milk

In the marble walls as white as milk,
Lined with skin as soft as silk,
Within a fountain crystal clear,
A golden apple does appear.
No doors are there to this stronghold
Yet thieves break in and steal the gold.

An egg or egg yolk. This is a variation of A Box Without Hinges.

Posted in Riddles

Don’t Get a Goat

On a game show there are three closed doors – one hides a car and the other two conceal a goat. The contestant selects a door, which remains closed, and the host, knowing where the car is hidden, reveals a goat behind one of the remaining two doors. The contestant is then given the option to switch doors or stay with the one they originally selected. What should the contestant do to have the best chance of winning the car?

The contestant should switch doors, which doubles the chance of winning the car. Initially there is a 2/3 chance of picking a goat, but once the other goat is revealed, switching to remaining door gives the contestant a better chance of winning the car. This is known as the Monty Hall Problem and can be very unintuitive.

Posted in Brain Teasers

Characters In The Correct Order

Put the characters C D M L X in the correct order (not alphabetical).

X (10), L (50), C (100), D (500), M (1000). They’re Roman numerals in order from smallest to largest.

Posted in Brain Teasers

Banana Dresser Grammar

What do these words have in common?

1. Banana
2. Dresser
3. Grammar
4. Potato
5. Revive
6. Uneven
7. Assess

If you move the first letter to the end of the word, it forms the same word backwards. Banana = ananab, dresser = resserd, and so on.

Posted in Brain Teasers

How Can Four Be Half of Five?

How can the number 4 be half of FIVE?

Beginning with FIVE, take away the F and E (half of the letters), leaving IV, which is the Roman numeral for four.

Posted in Brain Teasers

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

Quick Mental Math

Solve this math problem in your head. Divide 30 by a half, then add 10.

70. It’s not 25 because dividing by a half is the same as multiplying by 2.

Posted in Riddles

I Turn Polar Bears White

I turn polar bears white
and I will make you cry.
I make guys have to pee
and girls comb their hair.
I make celebrities look stupid
and normal people look like celebrities.
I turn pancakes brown
and make your champagne bubble.
If you squeeze me, I’ll pop.
If you look at me, you’ll pop.
Can you guess the riddle?

The answer to this admittedly lame riddle is, “No.” The reason is that the question at the very end asks if you can guess the riddle and there is nothing that satisfies all of the riddles’ requirements.

Some say that pressure is the answer, but they can’t explain how it turns polar bears white or pancakes brown. Nothing turns polar bears white, any more than something turns a snowflake white and heat makes pancakes brown, not pressure.

Posted in Riddles

Wily Winifred and the Case of the Odd Numbers

Mrs. Shine was having a rough day and wanted a break. So she asked her class to calculate the sum of the first 50 odd numbers. In a few moments, Winifred was at her desk with the correct answer of 2,500. Stunned, Mrs. Shine figured she must have gotten lucky, and sent precocious Winifred back to her seat with the task of finding the sum of the first 75 odd numbers. Again, Winifred returned in seconds with the correct answer (5,625).

How did Winifred find the answer so quickly?

Winifred, being the precocious child she is, realized there was a pattern when computing smaller sums of odd numbers.

First 3: 1 + 3 + 5 = 9
First 4: 1 + 3 + 5 + 7 = 16
First 5: 1 + 3 + 5 + 7 + 9 = 25

Do you see the pattern like our dear friend Winnie?

For the first n odd numbers, the sum is equal to n2. Thus the first 50 is 502, or 2,500, and the first 75 is 752, or 5,625.

Posted in Brain Teasers

Brandon at the Carnival

Brandon was walking around at the carnival. A man called out from a booth and said, “If I can write your exact weight on this piece of paper, you have to pay me $50. If I can’t do it, I’ll pay you $50.”

Brandon checked the booth for a scale but saw nothing. He agreed. Since your weight can fluctuate by a pound or two, he decided that no matter what number the man wrote, he would just say he weighed a pound more or less. In the end, the man in the booth won the $50. How did he do it?

The man in the booth wrote the words, “Your exact weight” on the piece of paper. Brandon paid up.

Posted in Brain Teasers