If You Break Me, I Don’t Stop Working

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

Your heart.

Posted in Riddles

Hundreds of Letters

What seven-letter word has hundreds of letters in it?

Mailbox

Posted in Brain Teasers

What Has Roots Nobody Sees?

What has roots that nobody sees,
Is taller than trees,
Up, up it goes,
Yet it never grows?

A mountain (from Tolkien)

Posted in Riddles

Feet on the Hike

A man hiked through the woods with his dog and saw three coyotes, six wolf cubs, seven bunnies, nine squirrels and thirteen chipmunks. How many total feet were there?

Two. The man has two feet. The rest of the animals have paws.

Posted in Brain Teasers

Into the House Through the Keyhole

What always comes into the house through the keyhole?

The key.

Posted in Riddles

Easy To Touch

You have one of me and I’m easy to touch,
I’m hard to look at, but you can in a clutch.

Yet you’re told to watch me, or get your friends’.
I’m often referred to when you make amends.

You can throw me out but not away,
I cause many pain, every day.

What am I?

Your back. You have one and it’s easy to touch but hard to look it. A common phrase is to “watch your back” and it’s common to “have your friend’s back.” When apologizing, you often want to take back what you said. You can throw out your back, but you can’t throw it away. And back pain causes people pain every day.

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$63 Exactly

A man owed his friend $63 and repaid him the exact amount in cash without using coins or $1 bills (no online transfers, checks, credit cards or any other tricks) and without requiring change. How did he do it?

A $50 bill, a $5 bill and four $2 bills.

Posted in Brain Teasers

At Birth It Can’t Start Nor By Death Is It Ended

More precious than gold, but cannot be bought,
Can never be sold, only earned if it’s sought,
If it is broken it can still can be mended,
At birth it can’t start nor by death is it ended.

Friendship. It is more precious than gold to have a genuine friend, and true friendship cannot be bought or sold, only earned. When a friendship is broken it can be fixed and infants aren’t able to make friends until they’re older, but death can’t end it. Love doesn’t work as an answer because a friendship requires two people to interact, while parents love their children as soon as they’re born.

Posted in Riddles

Bank Wait Times

Suppose a small bank has one teller and customer transactions take 10 minutes on average. With 5.8 customers arriving per hour, what is the expected wait time? What would it be if you added a second teller?

With one teller, customers will wait nearly five hours on average. But adding a second teller makes the wait go down to 3 minutes.

Thanks to John D. Cook for this one.

Posted in Brain Teasers

Seen in the Water

I am seen in the water
If seen in the sky,
I am in the rainbow,
A jay’s feather,
And lapis lazuli.

Blue.

Posted in Riddles