I Am Whole But Incomplete

I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.

What am I?

A skeleton.

Posted in Riddles

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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Cannot Be Seen, Captured or Held

All about, but cannot be seen,
Can be captured, cannot be held,
No throat, but can be heard.

The wind.

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False Positive HIV Test

Imagine an HIV test that is 95% accurate (false positive rate of 5%) and around 2% of the tested population is infected with HIV. What is the probability that you actually have HIV when your test comes back positive?

29%

To read more about this, see the False Positive Paradox page on Wikipedia.

Posted in Brain Teasers

In A Dark Room with a Rope and a Pencil

Imagine you are in a dark room with a locked door. All you have with you is a rope and a pencil. You can hear the rain outside, but there
are no windows. How do you get out?

Stop imagining.

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Cats and Kittens But No Mittens

Six men are carrying boxes holding six cats and each cat has 6 kittens. How many legs are there in total?

1020. There are 6 men with 2 legs each, for a total of 12 legs.
There are 36 cats with 4 legs each for a total of 144 legs.
There are 216 kittens with 4 legs each for a total of 864 legs
12 + 144 + 864 = 1020.

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Not a Burden For Its Weight

Not a burden for its weight and daily carried out,
He who takes it wishes it had never come about.

Punishment.

By Sef Daystrom

Posted in Riddles

My Tines

My tines are long.
My tines are short.
My tines end ere
My first report.

What am I?

A lightning bolt.

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A Hidden Message

44 33 555 555 666 9 666 777 555 3

What is the message in this code?

Pressing these digits in sequence will produce HELLO WORLD on a cell phone (for an SMS text message).

Posted in Brain Teasers

Company, Congregation or Convocation

Some form a parliament,
Others a company, congregation or convocation,
The mob can see a murder, or clamor and wake,
A bouquet is presented when flushed.

What are we?

Birds. These are collective nouns for groups of birds.
parliament – owls
company – parrots
congregation – plovers
convocation – eagles
mob – emus
murder – crows clamor – rooks
wake – buzzards
bouquet – pheasants (when flushed)

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