What is the approximate probability that she checked a social website first, then a school-related website? 0.042 0.267 0.533 0.667

Both the red and blue line segments stretch from the center of the circle to a point on the circle. the length of the blue segment is 5. how long is the red line segment?

In an improper fraction, is the numerator equal to, less than, or greater than the denominator

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?