What is the. least common multiple of 2 and 6

Which of the following transformations will always produce a congruent figure?

There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?

If f(x) and g(x) are inverse functions of each other, which of the following shows the graph of f(g(x)