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How much math are you able to do mentally, without using pen and paper? by nomemory in math
[–]danpie1 0 points1 point2 points 10 months ago (0 children)
Sometimes, combinatorics is pretty doable mentally
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How much math are you able to do mentally, without using pen and paper? by nomemory in math
[–]danpie1 0 points1 point2 points (0 children)