On the third question of the Assignment 3’s Quiz, one of the options states:

Mean squared error for training data in first case and third case are equal

After following the steps mentioned in the question, I got very similar mean squared errors, which differ only in the digits after the decimal points. Do they have to be exactly the same for this option to be correct? Or is it enough if the whole numbers of the mean squared error are equal?

On one of the previous quizzes there was a similar question, but in that case it specified the degree of precision (e.g. two decimal places) that had to be used for comparing the two values.