Answer:
The probability of not drawing a black marble is : 8/10, 4/5, 80%
The probability of drawing a red marble is: 3/10, or 30%
Step-by-step explanation:
Blue marbles: 5
Black marbles: 2
Red marbles: 3
Total marbles: 10
The probability of not drawing a black marble is :
NOT drawing a black marble means you'll draw either a blue or a red one. Combined, red and blue marbles account for 8 marbles out of 10.
So the probability of NOT drawing a black marble is 8/10, 4/5 or 80%
The probability of drawing a red marble is:
There are 3 red marbles, out of 10 marbles.... so the probability of drawing a red marble is 3/10, or 30%
