Two events, a and b, are disjoint. what is the probability that both a and b will occur at the same time?

ANSWER



EXPLANATION

If the two events are disjoint, then they are mutually exclusive.

This means that their intersection is zero.

Therefore



This implies that,





The probability that the two events will occur together is 0, which means an impossibility.

B. because the 7 represents "seven times", x represents "a number", 12 represents "plus twelve", and -4 represents "minus four"