Question

a can solve 80% of the given in mathematics and we can solve 60% what is the probability that at last on them will solve problem selected at random if they try independenty​

Answer 1

Answer:

Probability that A and We can solve

=80%X60%.

=80/100X60/100.

=0.8X0.6.

=0.48.

Probability that A can solve and We cannot solve

=0.8X(1-0.6).

=0.8X0.4.

=0.32.

Probability that We can solve and A cannot solve

=(1-0.8)X0.6.

=0.2X0.6.

=0.12.

Therefore, The Probability that at least one of them will solve

=0.48+0.32+0.12.

=0.92.