September's snippets are ready!

These mathematical snippets are all designed in intrigue your curiosity while being simple and straightforward.

• Although it seems to be an unusual source for math information, Business Insider recently published an article titled 7 Animated GIFs That Will Make You Instantly Understand Trigonometry. It's a great article, because it doesn't claim to be any more or less than what it is - just clear, informative animations. If you like these, imgur.com has a more complete gallery you may enjoy, as well.

• If you've enjoyed my discussions of the Monty Hall problem in 2006, in 2010, and in 2012, you might enjoy the BBC's article and video on the Monty Hall problem, which they know as the Deal Or No Deal problem.

• I bet that, if I let you choose 5 random integers, I'll be able to find 3 of them that sum to a total which is evenly divisible by 3. What are the odds of me being able to win this bet? The Mind Your Decisions blog takes a look at the surprising answer to this riddle.

• NumberPhile's latest video is oddly amusing. Both James Grime and Brady were sent packages simply labeled Warning: Contains Numbers. The surprise in the package was, well, interesting...