Question

Abby writes a test in maths and in science.The probability that she passes maths is 0.6.
The probability that she passes science is 0.7.The two tests are independent of each other.Calculate the probability that Abby:
a)Passes science and fails maths
b)Fails both tests

Answer 1

since the events are independent, just multiply their respective probabilities.
oh -- and review the rules for probability ...