Answer and Step-by-step explanation:
"a bag contains 3 red and 2 orange balls" Since it says, "a bag contains," most people would assume that that describes ALL that the bag contains. That is a total of 5 balls.
If you pick, without replacement, 5 balls from the bag, then you must pick 3 red and 2 orange balls (order doesn't matter). That's ALL of them.
Probability is defined as: (number of successful outcomes) / (number of possible outcomes).
Here it is: P = 1 / 1
So, P=1 (certainty)
P=100% (as a percent)