A person approaching a traffic light find the light is either red, yellow, or green. Construct a probability space corresponding to this situation if the light follows the cycle, red for 35 seconds, green for 45 seconds, yellow for 4 seconds. What is the probability that light is either green or yellow?

Find an bif a = {3, 6, 9, 12) and b = {2, 4, 6, 8, 10).

You can ride your bike around your block 6 times and the whole neighborhood 5 times in 16 minutes. you can ride your bike around your block 3 times and the whole neighborhood 10 times in 23 minutes. how long does it take you to ride around the neighborhood?

White shapes and black shapes are used in a game. some of the shapes are circles. while the rest are squares. the ratio of the number of white shapes to the number of black shapes is 5: 11. the ratio of the number of white cicrles to the number of white squares is 3: 7. the ratio of the number of black circles to the number of black squres is 3: 8. work out what fraction of all the shapes are circles.