Solution:
We know that for any two sets x and y
X∩Y⊆X
Therefore, for events A and B.
A∩B⊆A
∴P(A∩B)≤P(4)
[Since, Probability of subset is always less than or equal to the probability of its superset
So, we can say that probability of intersection of two events A and B is always less than or equal to those favorable to the event A Hence, the given statement is true