Question

If E and F are events such that P(E) = ¼ P(F) = ½ and P (E and F) = 1/8 Find . P (E or F)

• A. 3/4
• B. 5/8
• C. 1/2
• D. 7/8

Answer 1

Answer:

B. 5/8

P(E) = ¼ P(F) = ½ and P (E and F) = 1/8 P{E or F} = P{ E ∪ F} =P{E} +P{f} - P{E ∩ F} = 1/4 + 1/2 - 1/8 = 5/8