Task 1: Problem-solving, multiple methods: Odds and evens A set of six balls numbered 1,2,3,4, 5 and 6 are put in a bag and two are removed at random. What is the probability of getting an odd and an even ball? The balls are returned to the bag and two are removed another time. What is the probability of removing the same two balls? Solve using three different methods, as it may be solved in different levels of schooling. Include a visual method, an algebraic method (which is used to find answers, not to test given answers), and one other method.