Destroyer Of The Unbreakable

Destroyer of the unbreakable,
More of me is hidden than seen.

What am I?

An iceberg.

Posted in Riddles

Numbers Map

Arrange the numbers from 1 to 8 in the following sequence.

     a
  b  c  d
  e  f  g
     h

Each number must not be diagonally or directly adjacent to any number directly before or after it.

For example, 2 can only be placed in one spot.

     2
  x  x  x
  x  1  x
     x

Here are two solutions (there might be more).

    7
3   1   4
5   8   6
    2

    2
5   8   6
3   1   4
    7
Posted in Brain Teasers

Lending Money to Darlene

Franklin lent Darlene as much money as she already had, then she spent $10. The next day, Franklin lent her as much money as she now had and again, she spent $10. On the third day Franklin once again lent her as much money as she now had and she spent $10, leaving her broke. How much money did Darlene start with?

$8.75
You may have been tempted to guess $30 because $10 is spent three times, but that would mean she would have had $60 ($30 lent plus the $30 she already had), and $50 after spending $10. The rest of the numbers end up at higher than zero, so we know it has to be less than $30. Even starting at $10 leaves Darlene with $10 on the third day. Starting with $8.75 works out as follows.

Day 1: $8.75 (lent) + $8.75 (already had) – $10 (spent) = $7.50 (remaining)
Day 2: $7.50 + $7.50 – $10 = $5
Day 3: $5 + $5 – $10 = $0

Posted in Brain Teasers

Black, Red and White

What’s black when you get it, red when you use it, and white when you’re all through with it?

Charcoal.

Posted in Riddles

Made of Five Letters and Seven Letters

I’m made out of five letters,
And I’m made out of seven letters;
I have keys but I don’t have locks,
I’m concerned with time, but not with clocks.

What am I?

A piano. The word piano has five letters, and the scale on the piano is A through G, seven letters. The piano keys don’t have locks and playing piano requires you to keep time (but with a metronome, not a clock).

Posted in Riddles
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Rope Around The Earth

If a piece of rope was tightly wrapped around the earth and you added 3 feet to its length, how high could you uniformly raise it from the earth’s surface?

Just short of 6 inches.

Thanks to Nigel Coldwell for this one.

Posted in Brain Teasers

A Shorter Word

What word becomes shorter when you add letters to it?

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

Posted in Riddles

Graphical Rebus Five

What does this rebus represent?

Rebus

I Feel the Earth Move

Posted in Riddles
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Jim’s Canoeing Adventure

Jim was canoeing on a lake when a sudden thunderstorm blew in tipped his boat. He swam to a rocky island about a mile from his family’s cottage and found a small, abandoned shack. Inside was an old kerosene lamp and a few matches. All the wood on the island was too damp to burn and the lamp was his only means of signaling for help but it only held an inch of kerosene, not enough to reach its short wick. How did he get the lamp burning to summon help?

Knowing kerosene and water wouldn’t mix and kerosene is less dense than water, he dipped the lamp in the lake and filled it with enough water so the kerosene rose to the top to cover the wick. The lamp was still burning an hour later when a motorboat rescued him.

Posted in Brain Teasers

Soft and Transparent

I am soft and transparent.
I am so small that I can sit on your finger.
I have no light but I help you to see the beautiful world.

What am I?

A contact lens.

Posted in Riddles
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