Question

if the probability of A to fail in examination is 1/5 and that of B is 3/10 then the probability that either A and B fails is ​

Answer 1

Answer:

11/25 is probability that AandB fails.......

Answer 2

Answer:

3/10+1/5

=3/10+2/10

=5/10

=1/2

Therefore the probability of either A or B fails is 1/2.