How many letters does the longest word on this list consist of?The longest word that's possible to assemble from this list is 'carpometacarpi', which has 14 characters.
How many words can you make using the combination specified?On this page of words that have 'rp' in and end with 'pi', there are 4 combinations which can be selected.
What's the highest scoring word you can play in Scrabble ?Your only feasible option is 'carpompi' for a score of 16 points.