Five Three Two

What is the answer to the last equation?

5 3 2 = 151012
9 2 4 = 183662
8 6 3 = 482466
5 4 5 = 202504
7 2 5 = ?

10000 × (x × y) + 100 × (x × z) + transpose_digits(x × y + y × z)

transpose_digits() just swaps the digits

Posted in Brain Teasers

An Animal of Few Letters

I am an animal of few letters,
Remove the second and you can’t see,
Change it to “l” and I’m a punishment,
Yet backwards I’m a game.

What am I?

Frog. It only has four letters, removing the “r” leaves fog, which makes it hard to see. Changing the “r” to an “l” makes flog, a punishment I hope you’ve never experienced. Flog backwards is golf, a game some would call a punishment when you keep swinging away at the ball yet it remains perched on its little white tower of terror while the other golfers impatiently wait for you to tee off.

Posted in Riddles

Lies Behind Stars

It cannot be seen, it cannot be felt,
Cannot be heard, cannot be smelt,
Lies behind stars and under hills,
And empty holes it fills.
Comes first follows after,
Ends life kills laughter.

Darkness.

Posted in Riddles

White, Round Not Always Around

I’m white, I’m round, but not always around. Sometimes you see me, sometimes you don’t. What am I?

The moon.

Posted in Riddles

Reverse to Equal Ten

Which two of these rows can be reversed so the total of each row, across and down, equals 10?

A. 5 4 1
B. 6 1 3
C. 3 5 2

Rows B and C, becoming:

A. 5 4 1
B. 3 1 6
C. 2 5 3

Posted in Brain Teasers

A Trapped Flock of Birds

A flock of birds are trapped in a delivery truck. When would the truck weigh the most?

a) When the birds are resting on the floor
b) When they’re all flying
c) The weight remains the same

c – The weight doesn’t change since it’s a closed system.

Posted in Brain Teasers

Up and Down and Round About

I’m up and down and round about,
yet all the world can’t find me out.
Though thousands have employed their leisure,
they never yet could find my measure.
I’m found in almost every garden,
In a compass or a farden.
There’s neither chariot coach nor mill
may move one inch except I will.

What am I?

A circle.

Posted in Riddles

Julian and Penelope’s Marriage Ages

When Julian and Penelope met, one was half the others age plus seven years. Ten years later when they married, Penelope was thirty, but this time one was nine tenths the age of the other. How old was Julian? (No fractions or partial years, whole numbers only).

Julian was 27 when Penelope was 30.

Posted in Brain Teasers

Walks on Graves at Night

This walks on graves at night yet in homes during the day,
Men are scared of it, women like it, children play with it,
It lives on dates and salt,
It is covered in hair,
Its name starts with ‘M’ and it is mentioned in the Quran.

What is it?

Moths.
Most species of moths are nocturnal, yet they are attracted to light and can be found in homes. Men, in the most generic sense, can be scared of moths (see Mottephobia) as well as the damage they can cause as pests to bee hives, grain, flour, trees and agriculture. Women like moths because of the silk they produce. Children frequently chase and play with moths. Moths are attracted to salt and love to eat rotting fruit (such as dates). Some species of moths are densely covered with tiny hairs and of course it starts with the letter ‘m’. Lastly, moths are mentioned in the Quran (101:4 (Asad) [It will occur] on the Day when men will be like moths swarming in confusion)

Posted in Riddles

A Tasty Fruit

I am a tasty fruit that provides you with healthy nutrients. I can also be found on a calendar. What am I?

A date.

Posted in Riddles
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