Archive for errata

CS. Perfect Sums

First, let’s answer last week’s puzzle on clocks!

As it turns out, there are 143 times in each twelve hour period for which you can switch the hands of a clock and still have a legitimate time! It’s easy to find these by plotting the positions of the hands throughout the day:

Read the rest of this entry »

Comments (3)

CM. Crossing the Bridge

Save Indiana, his girlfriend, his father and his father’s sidekick from certain doom! They must cross a bridge across a gorge in no more than one hour!
Read the rest of this entry »

Comments (5)

CG. Graham’s Number

Graham’s number is truly, absolutely staggering…

Read the rest of this entry »

Comments (7)

CE. Big Numbers

We’re well on our way towards describing the two largest numbers that have ever been used! Unfortunately, there are at least three errors in this segment of the Math Factor–can you spot them all?

Comments (4)

AN. More Sucker Bets

Is there always a better choice?

Comments (3)

The Math Factor Podcast Website


Quality Math Talk Since 2004, on the web and on KUAF 91.3 FM


A production of the University of Arkansas, Fayetteville, Ark USA


Download a great math factor poster to print and share!

Got an idea? Want to do a guest post? Tell us about it!

Heya! Do us a favor and link here from your site!