Calculate correct scores for a multichoice vocabulary size test

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Variable Value
How many questions?
How many choices for each question?
How many words does each question represent?
(e.g. in Paul Nation 14,000 VST each question represents 100 words, in Paul Nation 20,000 VST each question represents 200 words. You may have to ask the test maker.)
Random score (rounded if necessary) 25
Random number of words 2500