The number cube has 3 positive numbers
there are 6 numbers total
the chance of landing on a positive number is
3:6, or 1:3, 50%, 0.5
The spinner has only one positive number.
There are 3 numbers total
the chance of landing on it is
1:3, 33.3%, 0.33
Multiply 1/3 * 3/6
You get 3/18
The possibility of getting both positives is
3/18
3:18
16.6%
0.16
Hope this helps :)