Exercise: Highs and Lows

Problem statement

Imagine you are analyzing a list of scores from a recent quiz. You are required to classify each score to determine how many are considered high or low. In this context, a score is categorised as high if it is greater than 50 or divisible by 3; otherwise, it is classified as low.

You are required to implement the count_low_high() function. Its parameter is a list of numbers. If a number is greater than 50 or divisible by 3, it will count as a high. If these conditions are not met, the number is considered a low. At the end of the function, you must return a list that contains the count of lows and highs, in that order. In case the list is empty, you may return None.

Sample input