16 - 4 + (160 / 20) 4 = 16 - 4 + 8*4
= 16 - 4 + 32
= 46
Answer:

Step-by-step explanation:
Given that,
Total number of slots = 38
0 and 00 are green.
Remaining number of slots = 38 - 2 = 36
18 of the 36 slots are colored red.
Rest number of slots = 36 - 18 = 18, are colored black.
The wheel spins once.
To find:
Probability that the ball stops on red.
Solution:
Formula for probability of an event E is given as:

Here, number of favorable cases is equal to the number of red slots.
Number of red slots = 18
Total number of cases = 38

I didn't really get the which part because we shape it to serveral factors, this is one of them