Question

On an average A can solve 60 % of the problems What is the probability of A solving exactly 5 problems out of 6 ? Wrong answer will be reported!

Answer 1

Answer:

A’s probability of solving problem = 75% = 75 / 100 = (3 X 25) / (4 X 25) = 3 / 4

A’s probability of not solving problem = 1 - (3 / 4) = 1 / 4

B’s probability of solving problem = 70% = 70 / 100 = (7 X 10) / (10 X 10) = 7 / 10

B’s probability of not solving problem = 1 - (7 /10) = 3 / 10

Now,

A or B solving a problem = A solves and B doesn’t + A doesn’t and B does + Both A and B solves the problem

= (3 / 4) X (3 / 10) + (1 / 4) X (7 / 10) + (3 / 4) X (7 / 10)

= (9 / 40) + (7 / 40) + (21 / 40)

= 37 / 40

= 37 / 40 X 100%

= 37 X 2.5%

= 92.5% or 0.925

Step-by-step explanation:

i hope it will be help you