Question

a box contains 5 red balls 6 black ball find the probability of not red ball​

Answer 1

Answer:

Well, let’s think about what individual probabilities we have here:

Pred=516

Pgreen=616

Pblack=516

Now, we were looking for the probability that we get either a red or black ball. This means we can add the two individual probabilities of each to give us the combined probability that we were looking for:

Pred+Pblack=516+516=1016=58

There we go. We have a 62.5% chance of grabbing either a red or black ball.

Hope this helps!