Question

In a box of 75 markers, 36 matkers are either red or black, and 15 are blue. What is the probability that a randomly selected marker is red or black or blue.

I have this 4 options:
A. 32 B. 68 C. 51 D. 24

Answer 1

The markers are either red, black or blue aren't they? So when you pick one you would definately get one of the three right? That would be a probability of 1 or 100%...

Are you sure you've asked the question correctly? Probabilities are always within a range of 0 and 1.

Answer 2

Oh wait, there are 75 total and only 51 that are red/black/blue but the probabilities still don't make sense.

Answer 3

:(

Answer 4

That's exactly how the exercise is given to me

Answer 5

Well it's probably meant as a percentage now that I look at it.

So there are 75 markers total and 51 are red/blue/black.

51/75 = 68%

Answer 6

They give me 4 ootion
32 68 51 24

Answer 7

Oh okay thankssssssss :D

Answer 8

This is true because red/blue/black make up 68 percent of all of the markers. So when you randomly choose one your odds are 68% that it is one of those.

Answer 9

possible outcome = 36+15 = 51
total outcome = 75
probability = possible outcome / total outcome =...
Probability cannot be greater than 1...

Answer 10

of course, in this case, you have to pick up the most sensible choice from these non sensible choices... If I were you , i would choose 51, then complain to the teacher :P

Answer 11

:)