This is an activity based on the daytime quiz show “Impossible” where a question is asked and three options given: one correct, one incorrect but could be correct if the question was slightly different (partial answer), and one that is impossible (cannot be the answer). This is designed to be a discussion/reasoning activity where students find the correct answer then discuss why the other two options are impossible or incomplete. Topics include HCF, fractions, percentages, bounds, standard form, ratio, proportion, indices.