Hurt Without Moving

We hurt without moving.
And poison without touching.

We bear truth and lies,
But are not judged by size.

What are we?

Words.

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From Diner to Menus

How can you go from DINER to MENUS, changing one letter at a time and forming another English word in each step?

DINER
MINER
MINES
MINUS
MENUS

Another option is:
DINER
DINES
MINES
MINUS
MENUS

Posted in Brain Teasers

Two Three Four Fifteen

What is the missing number?

2 3 4 15 12
3 4 5 28 20
4 5 6 45 30
5 6 7 66 42
6 7 8 ?? 56

91. To get the number in the fourth column, you add the numbers in column 1 and 2, then multiply by the number in column 2. f(n,m) = (n + m) * m
For example, f(2,3) = (2 + 3) * 3 = 15. Thus f(6,7) = (6 + 7) * 7 = 91

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Who May Enter?

A green glass door admits only certain objects. Apples and balls are allowed, but pears and bats aren’t. What determines whether an item can enter?

All words with a repeated letter are allowed. Green glass door, apple and ball.

Posted in Brain Teasers

A Head, One Arm and Round Bottom

What has a head, one arm, one leg and a round bottom?

A handicapped parking sign.

Posted in Riddles

Highest Product Using All Digits

What is the highest product that can be generated by multiplying two numbers while only using each digit once (1 through 9)?
For example, 12345678 * 9 = 111,111,102

9642 * 87531 = 843,973,902

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What is the center of gravity?

What is the center of gravity?

V. The letter ‘v’ is the center of the word gravity.

Posted in Riddles

Colored As A Maiden Tweaked

Colored as a maiden tweaked,
Time was naught when I began;
Through the garden I was sneaked,
I alone am the fall of man.

What am I?

An apple.

Posted in Riddles

What Surrounds The World

What surrounds the world, yet dwells within a thimble?

Space.

Posted in Riddles

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?

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