OUT OF A BOX THAT CONTAINS 4 BLACK MICE AND 6 WHITE ONES, THREE AR...

29. Out of a box that contains 4 black mice and 6 white ones, three are picked up. What is the probability that all three will be black mice? (a) 8/125. (b) 1/30. (c) 2/5. (d) 1/720. (e) 3/10.