8 year old: "3 up arrow 3 equals 2.7 times ten to the power of 1" Interesting way of saying 3^3 = 27
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He's referring there to Knuth's up arrow notation, in which 3 up 3 = 3^3; 3 up up 3 = 3^3^3; 3 up up up 3 = a power tower of 3s with 3^27 3s (a ridiculously huge number).
4:08 PM - 19 Oct 2017
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