Question

A candidate has to appear in an examination in three subjects: English, Mathematics and

Physics. His chances of passing in these subjects are 0.5, 0.7 and 0.9 respectively. Find the

probability that he passes in at least one of the subjects
(A) 0.985
(B) 0.95
(C) 0.8
(D) NONE​

Answer 1

Answer:

I think option D

bcoz

P(E)=total outcomes/no. of outcomes

= (0.5+0.7+0.9)/3

=2.1/3=0.7

Hope it helps...