Question

In a school of 90 learners, 47 study Maths and 57 study English. Twelve learnersstudy neither subject. I pick an English learnerat random, what is the probability that they also study Maths?

Please help.

Answer 1

Step-by-step explanation:

P ( math) = 47/90

P ( english) = 57/90

P ( M' intersection N')=12 /90

P ( M union N )'= 12/90

P ( M union N ) =1-12/90 =39/45

also,

39/45= 47/90 +57 /90 - P ( M intersection N )

=26 /90 = answer