Mother From a Family of Eight

This mother comes from a family of eight,
Supports her children in spite of their weight,
Turns around without being called,
Has held you since the time you crawled.

Who is she?

“Mother” Earth. The family of eight are the eight planets, all of the world’s population is quite a load, the earth is always spinning (or turning around) and unless you’re an alien, you’ve been on earth your whole life.

Posted in Riddles

I Always Tell the Truth

You see me quite often,
But don’t really care.
If you pass by me,
You’ll often stop and stare.

I can’t speak or see,
But don’t think me uncouth,
Because no matter what,
I always tell the truth.

What am I?

A mirror.

Posted in Riddles
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What State Is Round On One Side

What state is round on one side, high in the middle, and round on the other side?

Ohio. This one works a little better when spoken rather than read, but O is round, hi sounds like high and the last O is as round as the first.

Posted in Riddles

Memory I Have But I Have No Mind

Mouth-less but I will tell you a name that is not mine,
I will show you the years I have seen but I have no eyes,
Memory I have but I have no mind.

What am I?

A gravestone. The stone bears the name of the deceased and the memories and recollections of their life are represented by the grave site.

Posted in Riddles

Plum Taking

A man without eyes saw plums on a tree.
He neither took them nor left them, how can this be?

The man had only one eye and took one plum. (note singular versus plural)

Posted in Brain Teasers

Seemingly Simple Math

What is the answer to this math problem:

8 ÷ 2 (2 + 2)

16 or 1, depending.

According to PEMDAS, parentheses come first: 8 ÷ 2 (4)

Then, even though multiplication is first in PEMDAS, you go left to right: 4 (4) = 16

If you got 1, you’re in good company. That’s what I got at first too but most calculators I’ve tried get 16.

I found this at Popular Mechanics and the debate continues online.

Posted in Brain Teasers

A Word of Weather

Find this eight-letter word.

The first four letters are a variation of the weather.
The third through seventh letters give support but also could used when someone is executed.
And the last three letters forms the name of a person.

What’s the word?

Mistaken.

Mist = Variation of weather.
Stake = a tent stake or when someone is burned at the stake.
Ken = a person’s name.

Posted in Riddles

What Do These Dates Have In Common?

What do these dates have in common?

15 February 1984
2 July 1983
16 December 1983

They all fall in the middle.
15 February was the middle of February (1984 being a leap year).
2 July was the middle day of the year 1983.
And 16 December was the middle of December.

Posted in Brain Teasers

No Ears and More Than One Eye

I have no ears, but more than one eye,
Cut me in half, I won’t cry,
Leave me alone and I will die.

What am I?

A potato. The roots growing out of a potato are called eyes, when you cut a potato in half it doesn’t produce any moisture and if you leave a poor potato to its own devices, it will die.

Posted in Riddles

The Ages of a Prince and Princess

A princess is as old as the prince will be when the princess is twice the age that the prince was when the princess’s age was half the sum of their present ages.

What are their ages?

This one took a while to figure out and there are numerous valid ways of finding the answer.

Here is the solution I came up with

I created the following table from the riddle:

  Current Future Past
Princess x 2z (x+y)/2
Prince y x z

I then created three equations, since the difference in their age will always be the same.
d = the difference in ages
x – y = d
2z – x = d
x/2 + y/2 – z = d

I then created a matrix and solved it using row reduction.

x y z
1 -1 0 d
-1 0 2 d
.5 .5 -1 d

It reduced to:

x y z
1 0 0 4d
0 1 0 3d
0 0 1 5d/2

This means that you can pick any difference you want (an even one presumably because you want integer ages).
Princess age: 4d
Prince age: 3d

Ages that work

Princess Prince
4 3
8 6
16 12
24 18
32 24
40 30
48 36
56 42
64 48
72 54
80 60

To see other solutions check out the comments from when I posted this on my blog.

Posted in Brain Teasers