Three dice, six faces are marked with the number 123456, if randomly cast these three, find the even probability of upward face, find the odd and even probability

Three dice, six faces are marked with the number 123456, if randomly cast these three, find the even probability of upward face, find the odd and even probability

If three dice are cast, the probability of even number on each die is independent of each other, which is 1 / 2, and the probability of odd number is 1 / 2, then
The third power with the probability of 1 / 2 is equal to 1 / 8
The probability of having an odd number and two even numbers is zero
3*1/2*1/2*1/2=3/8
(the first 3 is to determine which die is odd, there are three possibilities. 1 / 2 is the probability that one is odd, and the other two are 1 / 2, which is the probability that the other two dice are even.)

There are two cubes, big and small. The six sides of each cube are marked with numbers 1, 2, 3, 4, 5 and 6 respectively. Throw the two cubes onto the table, and the sum of the numbers on the upward side is even______ Species

According to the list of questions: 1, 2, 3, 4, 5, 6, 1 (1, 1) (1, 2) (1, 3) (1, 4) (1, 5) (1, 6) 2 (2, 1) (2, 2) (2, 4) (2, 5) (2, 6) 3 (3, 1) (3, 2) (3, 3) (3, 4) (3, 5) (3, 6) 4 (4, 1) (4, 2) (4, 3) (4,4) (4,5) (4,6) 5 (5,1) (5,2) (5,3) (5,4) (5,5) (5,6) 6 (6,1) (6,2) (6,3) (6,4) (6,5) (6,6) ‖ there are 36 cases in total, and 18 cases in which the sum of numbers on the upward side is even