Having said that, I did just get marked down for having filter(num => num % 2 === 0) when the correct answer shouild (apparently) be filter(x => x % 2 === 0) so

Having said that, I did just get marked down for having filter(num => num % 2 === 0) when the correct answer shouild (apparently) be filter(x => x % 2 === 0) so it's not great.