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Divisible by Seven (worst card trick ever?) - Numberphile

2019-01-18

[public] 34.5K views, 1.28K likes, 22.0 dislikes audio only

This is "extra footage" from the main video on divisibility at: /youtube/video/yi-s-TTpLxY

Featuring Professor Tony Padilla.

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Divisibility Tricks - Numberphile by Numberphile
/youtube/video/yi-s-TTpLxY
I Love Norrie - Numberphile Get your Norrie sticker!
https://teespring.com//i-love-norrie-numberphile
Cards and Shuffling on Numberphile by Numberphile
/youtube/video/AxJubaijQbI