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Elliott
Many of you know how I love memorizing Pi. For those who don't know, the fact that I started the Grey Matters blog on Pi Day (3/14), and the 400 Digits of Pi section of the Grey Matters Store should be enough evidence. That's why I'm glad to see at least one young child, known here as only “Elliott”, getting a good start in his early years. He looks like he's barely starting elementary school, but he's able to recall 30 digits of Pi already!
Persi Diaconis
Fellow math and magic fan Persi Diaconis combines his interests in this lecture. He performs a simple magic effect in which a deck of cards is cut, and then 5 people each take a card. He is then able to identify them without looking at their faces.
Cool Memory Feat You Can Do!
This looks like an incredible memory feat, but is actually a simple mathematical feat you can do yourself!
Badri Narayanan
Watch Badri Narayanan perform lightning calculations without the aid of a calculator!
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