What's the largest word you can create using this list?The largest word is 9 characters, which is 'nagkassar'.
How many acceptable words could one put together with words that have 'gk' in and end with 'r'?You can go with up to a maximum of 3 entries.
What is the best score you can get in Scrabble from this list of words containing 'gk' and ending with 'r'?Since there are only a small amount of words possible, your only viable word is 'jangkar' which scores 19 points.