Two number cubes are rolled for two separate events:
event a is the event that the sum of numbers on both cubes is less than 10.
event b is the event that the sum of numbers on both cubes is a multiple of 3
list the members of the sample space for event a.

What is always true when two whole numbers are subtracted?

Type the correct answer in each box, round your answers to the nearest integer 20 25 30 in the figure, the perimeter of hexagon abcdef is approximately w units, and its area is square units

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?