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\(14\) all the way ...

Number Theory Level 2

What is the last digit of \[14 \uparrow\uparrow 14\]

See Knuth's up-arrow notation for details of the terminology.

6 4 8 2

Excel in math and science

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It's hard to learn from lectures and videos

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Our wiki is made for math and science

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including olympiad champions, researchers, and professionals.

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by Janardhanan Sivaramakr...

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