The Potato Paradox

Fred brings home 100 pounds of potatoes, which (being purely mathematical potatoes) consist of 99 percent water. He then leaves them outside overnight so that they consist of 98 percent water. What is their new weight?

50 pounds.

100 lb of potatoes with 99% water weight means there’s 99 lb of water and 1 lb of solids, a 1:99 ratio.

If the water decreases to 98%, then the solids account for 2% of the weight. The 2:98 ratio reduces to 1:49. Since the solids still weigh 1 lb, the water must weigh 49 lb for a total of 50 lbs for the answer.

Read more at the Potato Paradox wikipedia page.

Posted in Brain Teasers

You’re Halfway There

You’re standing 11 feet away from a doorway and with each step you move halfway to the doorway. How many steps will it take for you to get to the doorway?

Technically, the answer is infinity. If you keep going halfway, you’ll never actually make it to the doorway.

But in practice, after 10 steps you’ll be 1/8th of an inch to the doorway and anyone behind you would say to stop being a baby and take a real step through the doorway already.

Posted in Brain Teasers

The Yolk of the Egg

Which is correct to say, “The yolk of the egg are white?” or “The yolk of the egg is white?”

Neither. Yolks are yellow.

Posted in Riddles

Three Digits in a Row

On a regular 12-hour digital clock how many times would the same three digits in a row be displayed (e.g. 1:11, 11:12, 12:22) in one day?

34 times. These 17 instances will be visible twice in a 24 hour period.

1:11
2:22
3:33
4:44
5:55
10:00
11:10
11:11
11:12
11:13
11:14
11:15
11:16
11:17
11:18
11:19
12:22

Posted in Brain Teasers

Made of Ten But Two We Make

Made of ten but two we make,
When assembled others quake,
Five apart and we are weak,
Five together havoc wreak.

What are we?

A fist.

Posted in Riddles

What Boys Use, Girls Like and Parents Hate

Boys use it, girls like it, parents hate it. What is this 5-letter word?

The phone.

Posted in Riddles

Spit Like Bacon, Made With an Egg

I spit like bacon, am made with an egg,
I have plenty of backbone but lack good legs,
I peel like an onion but still remain whole,
I’m long like a flagpole, yet fit in a hole

What am I?

A snake.

Posted in Riddles

A Shorter Word

What word becomes shorter when you add letters to it?

Short. Adding ‘er’ to short gives you shorter.

Posted in Riddles

As Heavy As Man’s Golden Greed

A metal neither black nor red,
As heavy as man’s golden greed.
What you do to stay ahead,
With friend or foe or arrow and steed.

What am I?

Lead. Lead is a metallic gray, is very heavy and in order to stay ahead of someone, you need to be in the lead.

Posted in Riddles

If You Break Me

If you break me
I do not stop working,
If you touch me
I may be snared,
If you lose me
Nothing will matter.

What am I?

Hope.

Posted in Riddles