Full of Holes Yet Full of Water

I’m full of holes, yet I’m full of water. What am I?

A sponge.

Posted in Riddles

Wolves and Owls

You are in the woods with owls and wolves. There are 22 eyes and 32 legs. How many owls and wolves are there?

5 owls and 5 wolves, (not 6 owls because 2 of the eyes and legs are yours).

2 * owls + 2 * wolves = 20 eyes
2 * owls + 4 * wolves = 30 legs
owls + wolves = 10 eyes → owls = 10 – wolves
owls + 2 * wolves = 15 → 10 – wolves + 2 * wolves = 15 → wolves = 5
owls + 5 = 10 → owls = 5

Posted in Brain Teasers

Five Letters and People Eat Me

I have five letters and people eat me. When you remove my first letter I become a crime. Remove my first two letters and I am an animal. If you remove my first and last letters I’m a form of music.

What am I?

Grape

Grape = a fruit people eat
rape = a crime
ape = an animal
rap = a category of music

Posted in Riddles

What Digit Does Each Letter Represent?

This is what you know:

1. Each letter represents a different digit from 1 to 9
2. The total of each row is 17.
3. (B × B) + B + F = A
4. C × F = EF (a 2-digit number, not their product)

A B C
D E F

What digit does each letter represent?

A = 7
B = 1
C = 9

D = 8
E = 4
F = 5

A + B + C = 17
D + E + F = 17
B2 + B + F = A
C × F = EF

To begin with, B has to be a 1 or 2 or else A wouldn’t be a single digit. Plug in B = 2, gives you 6 + F = A, meaning F and A can only be (1,7) or (3,9). To get 17, C would have to be 8 or 6, but those values don’t work for C × F = EF. So B must be 1.

2 + F = A means F and A can be (2,4), (3,5), (4,6), (5,7), (6,8) or (7,9). To get 17 on the top row, the only option that leaves C as a single digit is F = 5 and A = 7.

C × F = EF
9 × 5 = 45, so E = 4 and D = 8 to make the second row equal to 17.

Posted in Brain Teasers

A Square and a Cube

What two-digit number is the square of one number and the cube of another?

64

82 = 64
43 = 64

Posted in Brain Teasers

The Most Impressive Boundary

The most impressive boundary’s not a wall.
It’s not a manufactured thing at all.
Moving towards it won’t reduce the gap
and nothing marks its presence on a map.

The horizon.

By Sef Daystrom

Posted in Riddles

A Mouth On My Head And Eat Everything

I have a mouth on my head and eat everything.

What am I?

A backpack.

Posted in Riddles

Cannot Hear or Even See

I cannot hear or even see,
But sense light and sounds there may be,
Sometimes I end up on a hook,
I can be combined with a book.

What am I?

A worm. Worms don’t have eyes or ears, but they can sense light and their bodies can detect vibrations in the ground. Fishers use worms as bait and the term bookwork is used for someone who loves to read.

Posted in Riddles

Shoe Door Sticks Straight

Shoe, door, sticks, straight.

What word comes next?

Hen. The words are the last in each phrase from the children’s nursery rhyme.

One, two, buckle my shoe;
Three, four, Shut the door;
Five, six, Pick up sticks;
Seven, eight, Lay them straight:
Nine, ten, A big, fat hen;

Posted in Brain Teasers

Turns Everything Around

What turns everything around but doesn’t move?

A mirror.

Posted in Riddles