Question

In an examination,60 candidates passed science or maths.if 15 passed both subjects and 9 more passed maths than science, find the number of people who passed maths and science, probability that a candidate passed exactly one subject.

Answer 1

If x passed science. then x+9 passed math. Now you know that
x + x+9 - 15 = 60
x=33
Then 18 passed only science, and 27 passed only math.
So P(only one subject) = (18+27)/60 = 45/60 = 3/4

That's the general way to solve this. Usually you have to figure out how many passed both (or all three, or whatever). In this case, there's a shorter way.
60 passed something
15 passed both, so
60-15 = 45 passed only one.

Answer 2

So please what the percentage of candidates who passed exactly one subject

Answer 3

Yes

Answer 4

good

Answer 5

Thanks

Answer 6

I dont know but pls whenever someone is trying to explain make the details clear enough thank you

Answer 7

Pls and also draw the venn diagram to make it more clear thank you

Answer 8

In an examination, 60 candidate

Answer 9

Please can you do the work and the take a picture of it for me to see cause I still don't understand please

Answer 10

Please I don't understand it

Answer 11

Pls draw the Venn diagram and solve it for as all to understand please so it now it was given to me as homework please do it now please

Answer 12

Solve it clearly and draw it on a venn diagram

Answer 13

I NOW GET IT. THANK YOU.

Answer 14

Grace