MathDB

7

Part of 2012 Hanoi Open Mathematics Competitions

Problems(2)

Q7 - Hanoi Open Mathematical Olympiad 2012 - Junior Section

Source:

6/10/2012
Q7. Find all integers nn such that 60+2n−n260+2n-n^2 is a perfect square.
calculusintegration
{1...1}{5...5}6 is a perfect square (HOMC 2012 Q7)

Source:

7/24/2019
Prove that the number a=1...15...56‾a =\overline{{1...1}{5...5}6} is a perfect square (where 11s are 20122012 in total and 55s are 20112011 in total)
number theoryPerfect Square