Fundapromat - Join our Fourteenth Math Webinar in English! Next Wednesday, April 13th, 2022 at 6 pm EDT, which is 5 pm Panama time, the mathemagician Arthur Benjamin, will be presenting on "
![Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks: Benjamin, Arthur, Shermer, Michael, Nye, Bill: 8581677777775: Amazon.com: Books Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks: Benjamin, Arthur, Shermer, Michael, Nye, Bill: 8581677777775: Amazon.com: Books](https://m.media-amazon.com/images/I/81YXNRTPJQL._AC_UF1000,1000_QL80_.jpg)
Secrets of Mental Math: The Mathemagician's Guide to Lightning Calculation and Amazing Math Tricks: Benjamin, Arthur, Shermer, Michael, Nye, Bill: 8581677777775: Amazon.com: Books
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