The probability of an event A occurs is P(A) = 0.3 The event B is independent of A and P(B) = 0.4.
Calculate P(A or B or both occur).
The answer is 0.58.
I would like to to know how to arrive at this answer.
The question is from Cambridge Advanced Level Mathematics Statistics 1 by Steve Dobbs and Jane Miller, Miscellaneous Exercise 4, Question 2 part (a).
Can someone please explain how to arrive at the answer.