What is the highest score you could get in Scrabble using this list of words that contain 'e' and end in 'kt'?
As there are merely 3 entries possible, you're only feasible option is gedackt scoring 15 points.
In total, how many words are possible to make using this combination of letters?
It's possible to derive 3 words using the combination you specified.
From that have 'e' in and end with 'kt', what's the longest word possible to derive?
The biggest word one could derive from this combination is gedackt, and it contains 7 characters.