Top network posts

• 52 Prove that $\sum_{n=1}^\infty \frac{n!}{n^n}$is irrational.
• 42 Formula for the simple sequence 1, 2, 2, 3, 3, 4, 4, 5, 5, ...
• 35 Turn off all lights in a ring-shaped palace
• 33 Find some digits of $17!$
• 33 If a coin toss is observed to come up as heads many times, does that affect the probability of the next toss?
• 29 Why are irrational numbers such a big deal?
• 27 Is there such a thing as a matrix of functions?
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