If A speaks the truth 40% of the times, B speaks the truth 80% of the times. What is the probability that at least one will tell the truth Choose the correct choice from the following:  A) 0.18  B) 0.12  C) 1.02  D) 1.2  E) 1.3
probability of A speaks truth p(A)=4/10;false=6/10   probability of 0.12 speaks truth p(0.12)=8/10;false=2/10.For given qtn   Ans=1-(neither of them tell truth).0.12ecause A &amp; 0.12 are independent events   =1-[(6/10)*(2/10)]=1-12/100=1-0.88= 
<gadget id="calculator">1-0.88</gadget>
<output>0.12</output>
0.12   ANSWER:0.12
<result>B</result>
If A speaks the truth 40% of the times, B speaks the truth 80% of the times. What is the probability that at least one will tell the truth