Im curious as to why we do not need to specify return "false" or "true" in this example?

Math is allowed, what you are getting is:
"Math::DomainError (Numerical argument is out of domain - "sqrt")"
you could use 'raise' to attend it or use logical expression to ensure the positive range of the number before use Math::sqrt

Thanks for mentioning. I am new on this platform and didn't know the purpose of spoiler flag. Now I knnow. Thanks :)

Use spoiler flag, please.

You get this error when you pass a negative value to Math.sqrt. You can't pass negative to it.

Very easy))

i agree, for example 1e16+1 returns true when it shouldn't

hmm.. i kept getting sqrt error. not sure why. thought Math.sqrt isn't supported here.

Note: this only works because of a lack of test coverage

a = "abcd"
b = "abe"

solution(a, b)
# => "abcdabeabcd"

"abe" is greater than "abcd", but also shorter.

Good thought, could be based on a minimum threshold honor. Or even weight their upvotes a lot more.

Very much so, we've been really wanting to include benchmarking, it just turned into a much larger feature than we initially thought, especially when you take into account trying to maintain accuracy and results fluctuation based on resources.

On my profile I appear as having completing 100% of the 5 kyu level and yet I am not leveling up to 4 kyu. Does anyone know what is going on?

Cheers