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brainopennow | brain open now

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July 28, 2013. Found a fun problem via facebook last week: find a set of whole numbers that add up to 25, and maximize the product of these numbers. It’s such a fun little puzzle that I won’t give away the solution here. … Continue reading →. Mystery of the Missing Hummus. January 20, 2013. Mmmmm…. edamame hummus, two delicious flavors in one perfect cylindrical container. 8 ounces of goodness. Well this is alarming. Couldn’t they fill it all the way? How much hummus am I missing? December 8, 2012. This ...

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#38 Shade Six | I think, therefore I am

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I think, therefore I am. A Mathematics problem solving weblog. 39 Double Twelve Dominoes →. September 2, 2009. Shade 6 circles on the diagram below, so that each row, column and diagonal has an even number of blank circles. This entry was posted in Logic. 39 Double Twelve Dominoes →. Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. Address never made public). You are commenting using your WordPress.com account. ( Log Out. 1000 Problems to Enjoy.

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#40 Bomber Pilot | I think, therefore I am

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I think, therefore I am. A Mathematics problem solving weblog. 39 Double Twelve Dominoes. 41 Cryptogram →. September 4, 2009. Suppose that you are a bomber pilot flying a B-17 during World War II. You know that 4% of bombers get shot down on average on each mission. Calculate the chance that you would successfully fly all the missions of your tour of duty, let’s say 50 (a larger number than was actually asked of air crews), without getting shot down. This entry was posted in Chance. 41 Cryptogram →.

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Which Spawned the Title, “Brain Open Now” | brain open now

https://brainopennow.wordpress.com/2012/09/04/which-spawned-the-title-brain-open-now

Meta-post / about writing →. Which Spawned the Title, “Brain Open Now”. September 4, 2012. Not sure if I’ve ever explained the name of this here blog. “Brain Open Now”, you can see it right up there. So, what does it mean? I’ll tell ya. Let me take you back to a fellow you mighta heard about… fellow named Paul Erdős. Interesting guy, and I can point you to the obvious places. This is as good a premise as any for starting a blog! This sounds suspiciously like blogging. For some reason I chose. And I don&#...

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#39 Double Twelve Dominoes | I think, therefore I am

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I think, therefore I am. A Mathematics problem solving weblog. 40 Bomber Pilot →. 39 Double Twelve Dominoes. September 3, 2009. Some double twelve dominoes are shown in the phot below. How many dominoes are there in a full double twelve set? How many dots do they have in total? Photo from another sergio. This entry was posted in Counting Methods. 40 Bomber Pilot →. Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. Address never made public).

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Mystery of the Missing Hummus | brain open now

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Meta-post / about writing. Fun with e →. Mystery of the Missing Hummus. January 20, 2013. Mmmmm…. edamame hummus, two delicious flavors in one perfect cylindrical container. 8 ounces of goodness. Well this is alarming. Couldn’t they fill it all the way? How much hummus am I missing? Wait, that’s cheating! Time to put on your geometric modeling caps. What questions would you ask? What do you need to know? This entry was posted in curriculum. Meta-post / about writing. Fun with e →. 5 How often do you cook?

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Descartes | I think, therefore I am

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I think, therefore I am. A Mathematics problem solving weblog. The man who invented analytic geometry, René Descartes (1596-1650), never got out of bed before 11 in the morning! Analytic geometry brings together the analytical tools of algebra and the visual immediacy of geometry by providing. It is said (although the story is probably a myth) that Descartes came up with the idea for his coordinate system while lying in bed and watching a fly crawl on the ceiling of his room. He reached Stockholm with no...

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#41 Cryptogram | I think, therefore I am

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I think, therefore I am. A Mathematics problem solving weblog. September 4, 2009. Cryptograms are encoded sentences where each letter has been substituted for another. A letter may not stand for itself. Can you decode this cryptogram? This entry was posted in Logic. Leave a Reply Cancel reply. Enter your comment here. Fill in your details below or click an icon to log in:. Address never made public). You are commenting using your WordPress.com account. ( Log Out. Notify me of new comments via email.

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Hall of Fame | I think, therefore I am

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I think, therefore I am. A Mathematics problem solving weblog. Problem Solving on the Web. 1000 Problems to Enjoy. Problem of the Week. Starter of the Day. Create a free website or blog at WordPress.com. Follow “I think, therefore I am”. Get every new post delivered to your Inbox. Build a website with WordPress.com.

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I think, therefore I am | A Mathematics problem solving weblog. | Page 2

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I think, therefore I am. A Mathematics problem solving weblog. Newer posts →. August 11, 2009. How many spots are on the dalmation? 1 The number of spots is divisible by 3. 2 When the number of spots is divided by the number of legs, a remainder of 3 results. 3 The spots can also be divided by the total of legs, ears, eyes and tail to leave a remainder of 6. August 10, 2009. July 30, 2009. June 22, 2009. June 21, 2009. June 20, 2009. 4 in a box. 6 in a box. 4 in a box. 5 in a box. June 19, 2009. The draw...