Mensa members - 25% can't do math, 10% can't do arithmetic. From a 'Mensa puzzle-a-day' book with answers in the back and percentages of Mensa members getting t

Mensa members - 25% can't do math, 10% can't do arithmetic. From a 'Mensa puzzle-a-day' book with answers in the back and percentages of Mensa members getting them right.