How many words are possible to make using these specific combinations of letters?From this page of words starting with 'w' that contain 'rru', Dictionarypedia has found 4 effective entries that are available.
What is the highest score you could get in Scrabble from this list of words that start with 'w' and include 'rru'?As there are only 4 entries available, your only viable word is 'waterrug' scoring 12 points.
What is the longest word you can derive with the combination specified?The word 'waterrug' contains 8 characters.