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Toby Mak

Lockdowns are set to be relaxed in many countries, so take a break from your screen and go outside! (when it is safe to do so)

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26 Frequency of the Prime Numbers Aug 8 '18
13 simple probability question about mutually exclusive event Sep 19 '17
11 Let $x$, $y$ and $z$ be prime numbers. Find the number of ordered triplets such that $x^y + 1 = z$ Sep 28 '18
7 Is every $N$th Fibonacci number where $N$ is divisible by $5$ itself divisible by $5$ Jan 29 '18
6 Why can there not exist a pyramid with 29 corners? Sep 12 '18
6 The units digit of $(((\dots((2018^{2017})^{2016})^{.^{.^{.}}})^3)^2)^1$ Sep 1 '19
5 The limit $\lim\limits_{x\to 0}\frac{\sqrt[4]{x^4+1}-\sqrt{x^2+1}}{x^2}$ Sep 1 '19
5 Integrate $\sqrt{(1-\cos(x))^3}$ Nov 30 '18
5 Can I not use QM-AM inequality to solve this? Aug 12 '19
5 What is the probability of the sum of four dice being 22? Jul 11 '17
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