Explanation:
I assume the number cube is a regular one with 6 sides and numbers 1..6.
7.
P(odd) is the probability to get an odd number (1, 3, 5) or if the possible 6 numbers (1..6).
so that is
3/6 = 1/2 = 0.5
8.
P(even) : (2, 4, 6) out of 1..6 is
3/6 = 1/2 = 0.5
9.
P(prime) : (2, 3, 5) out of 1..6 is
3/6 = 1/2 = 0.5
remember, 1 is not a prime number (just a special case), and 2 is a prime number, because it is only divisible by 1 and itself.
10.
P(greater than 6) : that is impossible to get on a die with numbers 1..6.
so, the probability is
0/6 = 0