Let [math]A[/math] and [math]B[/math] be events such that [math]P(A \cap B) = 1/4[/math], [math]P(A^c) = 1/3[/math], and [math]P(B^c) = 1/2[/math]. What is [math]P(A \cup B)[/math]?

• 1/2
• 7/12
• 2/3
• 11/12
• 1

References

Doyle, Peter G. (2006). "Grinstead and Snell's Introduction to Probability" (PDF). Retrieved June 6, 2024.