Mysterious Math

This problem can be solved by preschool children in five to ten minutes, by programmers in an hour and by people with higher education…well, check it yourself.

8809 = 6
7111 = 0
2172 = 0
6666 = 4
1111 = 0
3213 = 0
7662 = 2
9313 = 1
0000 = 4
2222 = 0
3333 = 0
5555 = 0
8193 = 3
8096 = 5
1012 = 1
7777 = 0
9999 = 4
7756 = 1
6855 = 3
9881 = 5
5531 = 0
2581 = ?

What is the missing number and why?

Two. The number is how many closed circles there are in the 4 digits. 0, 6 and 9 each have one, 8 has 2.

Posted in Brain Teasers

A Headless Kiss

What do you kiss that has a neck but no head?

A bottle.

Posted in Riddles

Gets Rid of Bad Ones

Gets rid of bad ones,
Short and tall,
Tightens when used
One size fits all.

A noose.

Posted in Riddles

Exist Between Two Things

It can only exist between any two things
and men know it well for the hardships it brings.

Distance.

By Sef Daystrom

Posted in Riddles

What Does a Cow Have Four Of?

What does a cow have four of, a dog has eight of and you only have two of that can be used standing up or sitting down?

Nipples or teats. Cows have four of them, dogs usually have eight and a human (assuming that’s who’s reading this) has two. Cows milk standing up, dogs often lie down and women usually sit when breastfeeding.

Posted in Riddles

One Hundred Point Words

The answer to each clue is a single, 100-point word, or a word whose letters add up to 100, with a = 1, b = 2. I wrote this word value calculator so you can easily check your guesses.

i. Peanut butter tastes like this.
ii. The hat a Dad wears.
iii. To fire a chef,
iv. A smart timepiece.
v. Figured it out again.
vi. Where a kid can sleep.
vii. The magical fruit leaves you doing this.
viii. Betrayed for this much silver.
ix. A baked good that is height challenged.
x. A sticky way to neaten your hair.

i. nutty
ii. fatherhood
iii. cookout
iv. clockwise
v. resolved
vi. boycott
vii. tooting
viii. thirty
ix. shortcake
x. honeycomb

Posted in Riddles

Complete This GPPAP Series

What are the next four letters in this series?

GPPAP KTGAMTC WTBCOTP ????

GPRA – Georgie Porgie ran away.

Here’s the whole nursery rhyme:

Georgie Porgie, pudding, and pie,
Kissed the girls, and made them cry.
When the boys came out to play,
Georgie Porgie ran away.

Posted in Brain Teasers

What Has Roots Nobody Sees?

What has roots that nobody sees,
Is taller than trees,
Up, up it goes,
Yet it never grows?

A mountain (from Tolkien)

Posted in Riddles

250 Lbs Across the River

Two boys weighing 50 pounds each and their older brother weighing 100 pounds wish to cross a river. Their boat will only hold 100 pounds. How can they all cross the river in the boat?

Two 50lb boys cross, one comes back.
100lb boy crosses, other 50lb boy returns
Both 50lb boys cross.

Posted in Brain Teasers

Apples, Ice and Flowers

Apples, ice, and flowers can do it.
Pears, stones, and coins can’t.

Float.

By Sef Daystrom

Posted in Riddles