Riddles and Brain Teasers

Liquid In Nature

I am liquid in nature,
But don’t bend me to far,
For then I may break
And give you a scar.

What am I?

Glass. Technically, glass is an amorphous solid, but that doesn’t have the same ring to it.

Posted in Riddles

Tagged with What am I?

Debbie’s Dragster

Debbie starts driving her dragster from rest and constantly accelerates to 60 mph in 10 seconds. How far does she travel in those 10 seconds?

Show the answer »

1/12 mileTen seconds is 1/6 of a minute and 1 minute is 1/60 of an hour, so 10 seconds is 1/360 of an hour.If you graph her trip with the speed on the y-axis and the time on the x-axis, you get a triangle with height of 60 mph and width of 1/360 of an hour. To calculate the area of the triangle, you multiply 1/2 × 1/360 × 60 = 1/12.

1/12 mile

Ten seconds is 1/6 of a minute and 1 minute is 1/60 of an hour, so 10 seconds is 1/360 of an hour.

If you graph her trip with the speed on the y-axis and the time on the x-axis, you get a triangle with height of 60 mph and width of 1/360 of an hour. To calculate the area of the triangle, you multiply 1/2 × 1/360 × 60 = 1/12.

Posted in Brain Teasers

Two Three Ten Sequence

If:
2 3 = 10
7 2 = 63
6 5 = 66
8 4 = 96
9 7 = __

What is the missing number?

Show the answer »

f(n, m) = (n + m) × n

e.g. f(2, 3) = (2 + 3) × 2 = 10

Hence, f(9, 7) = (9 + 7) × 9 = 144

Posted in Brain Teasers

Tagged with sequence

Numbers Night Club

A man wants to get into a night club where the bouncers test each person before they can enter. The man waits and watches.
A woman walks up to the bouncers and the bouncers say 6. The woman replies with 3 and goes in.
A small man walks up and they say 12. The man replies 6 and is admitted.
The first guy thinks he’s figured it out and walks up. They say 4 and the man replies with 2, but they don’t let him in.

What should he have said?

Show the answer »

4. The answer is the number of letters in the number. Six has 3 letters, twelve has 6 letters and four has 4 letters.

Posted in Brain Teasers

Square Root Equations

Arrange the digits 1 through 9 into an equation so that the first number is the square root of the second number. (Two possible variations)

Show the answer »

567² = 321,489

854² = 729,316

Posted in Brain Teasers

XQQQME

What is this phrase? XQQQME

Show the answer »

Excuse me. Literally, x + q’s + me.

Posted in Brain Teasers

Tagged with rebus

Two More Seconds

Ida puts her coffee into the microwave, as she does every morning, for exactly two minutes. When the microwave goes off, she opens the door, but then closes the door again and sets the microwave for two more seconds. What good would two more seconds be?

Show the answer »

To rotate the handle on the mug so she can comfortably remove it.

Posted in Brain Teasers

Blast Paper Box Bank

Here are two groups of words.

A. blast, paper, box, bank
B. juice, bag, cradle, carpet

Which word from Group B belongs with the words from Group A?

Show the answer »

Bag. All of the words in group A can begin with the word sand.

Posted in Brain Teasers

Alive Without Breath

Alive without breath,
As cold as death,
Clad in mail never clinking,
Never thirsty, ever drinking

Show the answer »

A fish.

Posted in Riddles

No Head On Which A Hat To Place

I always run but never walk,
I sometimes sing but cannot talk,
No head on which a hat to place,
You always look me in the face.

What am I?

Show the answer »

A clock. It runs all the time, it “sings” for hourly chimes, cuckoos or alarms, it doesn’t have a head (but does have hands) and you look a clock in the face to tell the time.

Posted in Riddles

More ›