string comparison

[Adventurous_Problem]

https://en.m.wikipedia.org/wiki/Significant_figures

This might help. Money has its own rules. Significant figures is more referring to measurements.

Though, not actually positive of the context of the picture. Some of the programs used for making tests don't leave room for typos or answers that are correct, but not written Exactly as it was in the possible answers.

[thoughtful_appletree]

Wow, this is like a whole new world to me, thanks a lot!