ABCD equals DCBA

What 4-digit number abcd satisfies this equation?

4 × abcd = dcba

2178

4 × 2178 = 8712

Posted in Brain Teasers

A Black Dog Sleeping

A black dog is sleeping in the middle of a black road that has no streetlights and there is no moon. A car coming down the road with its lights off steers around the dog. How did the driver know the dog was there?

It was daytime.

Posted in Riddles

I’m Usually Quite Pleasant

I’m usually quite pleasant
As you roam and play,
But if you look into my eyes,
I’ll not look away.

Once you turn away from me,
I’ll attack if I stay dry,
Better grab a pail of water,
I’ll not stop until I die.

What am I?

An Enderman, from Minecraft.

Enderman are normally passive, but they become hostile if a player looks directly at them. The Enderman will stare back until the player looks away, and then attack the player. A bucket of water is the best way to defeat an Enderman.

Posted in Riddles

Square Root Equations

Arrange the digits 1 through 9 into an equation so that the first number is the square root of the second number. (Two possible variations)

5672 = 321,489

OR

8542 = 729,316

Posted in Brain Teasers

Throw Away Outside, Cook Inside

You throw away the outside and cook the inside. Then you eat the outside and throw away the inside. What did you eat?

An ear of corn.

Posted in Riddles

Kings And Queens May Cling To Power

Kings and queens may cling to power
and the jester’s got his call
But, as you may all discover,
the common one outranks them all

An ace (in a deck of cards).

Posted in Riddles

Too Much For One

I am too much for one, enough for two, but nothing to three. What am I?

A secret.

Posted in Riddles

First is Twice in Apple

My first is twice in apple but not once in tart.
My second is in liver but not in heart.
My third is in giant and also in ghost.
Whole I’m best, when I am roast.
What am I?

You are a pig.

Posted in Riddles

Starts With T

What starts with a T, ends with a T, and has “T” in it?

A teapot.

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