Expain why n(n-1) must be an even number

a. she will receive a refund of $278.

step-by-step explanation:

other answer is correct. i had used the radius of the radius somehow. a website:

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12

8

step-by-step explanation: