10 Riddles & Brain Teasers

This is perhaps off topic but if so then only slightly, because if you like to play casual games, more than likely you have a thing for riddles and brain teasers too.

So, for all you intelligence junkies and puzzle lovers, here is a classic selection of riddles and brain teasers, including the corresponding answers or solutions.

Riddle #1

What is so fragile that when you say its name you break it?

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Silence.

Riddle #2

I'm light as a feather, yet the strongest man can't hold me for much more than a minute.
What am I?

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Breath.

Riddle #3

I am weightless, but you can see me. Put me in a bucket, and I'll make it lighter. What am I?

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A hole.

Riddle #4

The man who invented it doesn't want it. The man who bought it doesn't need it. The man who needs it doesn't know it. What is it?

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A coffin.

Riddle #5

What's black and white and red all over?

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A newspaper. Also: a sunburned penguin, a zebra painted red, or an embarrassed skunk.

Riddle #6

I can run but not walk. Wherever I go, thought follows close behind. What am I?

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A nose.

Riddle #7

What gets wetter and wetter the more it dries?

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A towel.

Riddle #8

Until I am measured,
I am not known.
Yet how you miss me,
When I have flown!
What am I?

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Time.

Riddle #9

What does man love more than life?
Fear more than death or mortal strife?
What do the poor have, what the rich require,
And what contented men desire?
What does the miser spend, the spendthrift save,
And all men carry to their graves?

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Nothing.

Riddle #10

What walks on four legs in the morning, two at mid-day, and three in the evening?

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A human.
As a baby a human crawls. In old age, a human uses a cane.