Find the smallest integer solution to the equation 1/x^2 + 1/y^2 = 1/z^2
Gravity on the Moon is about 1/6th that on the Earth. A
pole-vaulter 2 metres tall can clear a 5 metres pole on the Earth.
How high a pole could he clear on the Moon?
Prove that k.k! = (k+1)! - k! and sum the series 1.1! + 2.2! + 3.3!
We received two great solutions to this
problem, in which the sequences were explained and the Odd One Out
was correctly found.
Simon from Elizabeth College submitted this
excellent answer. We particularly liked the way in which he
explained his statistical reasoning, combining experimentation with