If A and B are any two events such that P(A) + P(B) – P(A and B) = P(A), then
It is given in the question that,
A and B are any two events where,
P (A) + P (B) – P (A and B) = P (A)
∴ 
= 1
Hence, option B is correct
19
If A and B are any two events such that P(A) + P(B) – P(A and B) = P(A), then
It is given in the question that,
A and B are any two events where,
P (A) + P (B) – P (A and B) = P (A)
∴
= 1
Hence, option B is correct