P (A ∪ B) =.8, P (B) =.7, P (A ∩ B) =.6. Find P (A).

Given:

P (A ∪ B) = 0.8,

P (B) = 0.7,

P (A ∩ B) = 0.6.

P (A) = ?

Now, the formula is:

P (A U B) = P (A) + P (B) - P (A ∩ B)

0.8 = P (A) + 0.7 - 0.6

Or P (A) = 0.8 + 0.6 - 0.7

P (A) = 0.7 Ans.