What's the biggest word you can derive using the combination specified?The longest word is 7 characters, which is 'toheroa'.
How many words are possible to put together using the combination specified?On this page of words that start with 'toh' and contain 'a', Dictionarypedia has found 2 entries which are available.
What's the highest scoring word in Scrabble with the above combination ?As there is merely to pick from, you are obliged to go with 'tohunga' which totals 11 points.