Useless Keys

What keys don’t unlock any doors?

Piano keys, keyboard keys, monkey, donkey, turkey, jockey, hockey, doohickey, malarkey and passkey. There may be others, but you get the drift.

Posted in Brain Teasers

First One, Then I Seem None

First I am one, then I seem none,
In death I birth new life.
What’s raised exceeds me,
For on bent knee,
I add to a world that’s rife.

What am I?

A seed. One seed turns into a plant or tree and seemingly disappears. When a plant dies, the seeds can be harvested to create new plants. From a single seed, hundreds more are created, vastly exceeding the original. Gardeners care for plants on bent knee and each new plant helps make the air fresher.

Posted in Riddles

Reading Hexadecimal

How many people can read hexadecimal if only you and dead people can read it?

57006

The trick is that the word “dead” represents a number in hexadecimal. That number in base 10 is 57005, and adding one more to include yourself gives you: 57005 + 1 = 57006.

Posted in Brain Teasers

Not in Any State

Which letter of the alphabet is the only one that does not appear in any of the names of the 50 United States?

The letter Q.

Posted in Brain Teasers

What’s Nowhere But Everywhere

What’s nowhere but everywhere except where something is?

Nothing. (From Gotham)

Posted in Riddles

Do Not Begrudge This

Do not begrude this,
For it is the fate of every man.
Yet it is feared,
And shunned in many lands.
Causes problems, and sometimes gaps,
Can hobble the strongest, and make memory laps.
What is this danger we all face?
For being a part – of the human race.

Growing old.

Posted in Riddles

Not a Toy But Used For Pleasure

I am not a toy, though many use me for pleasure. I have a butt but I can not poop. I have been known to kill people. What am I?

A cigarette.

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The Mystery Six-Digit Number

Find a six-digit number containing no zeros and no repeated digits that satisfies the following conditions:

1. The first and fourth digits sum to the last digit, as do the third and fifth digits.
2. The first and second digits when read as a two-digit number equal one quarter the fourth and fifth digits.
3. The last digit is four times the third digit.

192768.

If you call the number ABCDEF, then you get the following equations.

1. A + D = F and C + E = F
2. AB = DE / 4
3. F = 4 × C

The only numbers that work for C and E are 2 and 6 or 4 and 8, and in order to make F a single-digit number, we can deduce that C = 2, E = 6 and F = 8.

So far, our number is AB2D68.

We know A + D = 8 so A and D are both odd numbers. The only odd number less than 8 that we can use for D to make one-quarter of two-digit number D6 also be a two-digit number is 7, so D = 7 and A is 1. This makes the two-digit number AB 19.

Posted in Brain Teasers

ABCDE and What?

What comes next in this series?

A B C D E

Hint: It’s not F.

K. The letters represent vitamins, and there is currently no Vitamin F, G, H, I or J.

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After the Tenth One

After the tenth one it didn’t matter that he came from an ethnic minority. Who was it?

Moses from the Bible. The Pharaoh wouldn’t release the ill-treated Israelites (an ethnic minority) from slavery until being visited by ten plagues.

Posted in Riddles