Assuming that their exam success is independent then
P(both fail) = 1/4 x 2/5 = 2/20 or 1/10
Its 13 cause 26 times.5 is 13
Sorry I'm late but the answer is 1/2. I just took the quiz and I got 100%
10×4,000=40,000 because all u do is add an extra zero everything you multiple something by ten