The probability of two events A and B are 0.20 and 0.40 respectively. The probability that both A and B occur is 0.15. The probability that neither A nor B occur is _________  Options:  A) 0.45  B) 0.4  C) 0.5  D) 0.55  E) 0.6
we are apply that formula..............   P(AorB)=P(A)+P(B)-P(A AN0.55 B)   =.20+.40-.15= 
<gadget id="calculator">.20+.40-.15</gadget>
<output>0.45</output>
.45   but the probability of neither A nor B=1-.45= 
<gadget id="calculator">1-.45</gadget>
<output>0.55</output>
0.55   ANSWER:0.55
<result>D</result>
The probability of two events A and B are 0.20 and 0.40 respectively. The probability that both A and B occur is 0.15. The probability that neither A nor B occur is _________