What is the highest scoring word in Scrabble available from this list ?Your only feasible option is 'podex' which totals 15 points.
How many characters are in the longest word on this list?There are 20 characters in the word 'pseudoambidextrously', which makes it the longest word Dictionarypedia has.
How many words are possible to make from words that start with 'p' and include 'dex'?From this page of words that start with 'p' and include 'dex', you have 3 entries which can be selected.