The probability that event M will not occur is 0.6 and the probability that event R will not occur is 0.6. If events M and R cannot both occur, which of the following is the probability that either event M or event R will occur?  Choose the correct choice from the following answers: A) 1/5 B) 2/5 C) 3/5 D) 4/5 E) 12/25
p(m) =0.4   p(r) =0.4   p(m intersection r) = 0 (If events M and R cannot both occur)   p(m or r) = 0.4+0.4= 
<gadget id="calculator">0.4+0.4</gadget>
<output>0.8</output>
0.8   Corrected !!   Answer 4/5
<result>D</result>
The probability that event M will not occur is 0.6 and the probability that event R will not occur is 0.6. If events M and R cannot both occur, which of the following is the probability that either event M or event R will occur?