Just a reminder that yours truly and wife Kara, along with mental_floss co-founder and president Will Pearson and mental_floss VP Toby Maloney will give a presentation at this year's national Mensa meeting - AG 2010 - in Dearborn, Michigan, on Thursday, July 1, at 6pm. We'll offer some live Brain Games and trivia questions, and expect to have plenty of mental_floss prizes to give away. Click here for more information on the event. Now... today's Brain Game. Enjoy:

What's the next number in this sequence?

2, 6, 12, 20, 30, ?

Here is the SOLUTION.



The numbers represent 1x2, then 2x3, then 3x4, 4x5, and 5x6... so the next number, 6x7, equals 42.