This is one of the most popular sections of Automation Notebook; The Break Room. This popular spot is often the first place many of our customers turn to when they receive the latest issue. Once you read it, you’ll agree. Take a few minutes to warm up the deep recesses of your mind. Once you’ve conquered these puzzles, feel free to roam around your office and boast of your intellectual elevation. But don’t worry, if you don’t solve them. It’s OK. We won’t tell anyone.


1.) Sequential Differential

What is the next number in this sequence?:









2.) Vexing Hexing

breakroom-image1How many people can understand hex, IF only you, your math teacher, and dead people can understand hex? [hozbreak]

3.) Buying Timing

breakroom-image2An engineer purchased 20 items at and spent exactly $200. She bought at least one each of the following items (and nothing else): a SureStep stepper motor (STP-MTR-23055D) at $40, a SureMotion L-pitch timing belt (187L050NG) at $5, and a SureMotion XL-pitch timing belt (170XL025NG) at $2.50.

What were the quantities of the items on her order? 

List prices as of 4/22/2015. Did you know that AutomationDirect now sells a wide range of timing belts and pulleys in L and XL sizes?

We offer pulleys with plain bore, QD, and taper-lock bushings. Visit and for more information.


A Mathematical Joke:

There are only 10 kinds of people in the world, those that understand binary and those that don’t.