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Consider the two events and . The probability that at least one of or occurs is . If the…
Consider the two events $A$ and $B$. The probability that at least one of $A$ or $B$ occurs is $0\cdot 6$. If the probability of both $A$ and $B$ occurring is $0\cdot 3$, then calculate $P(A') + P(B')$.
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From ISC 2025 Improvement Mathematics Paper 1, question 1(xv).