Denise is trying to open a safe whose combination she does not know. IF the safe has 4000 possible combinations,and she can try 150 different possibilities,what is the probability that she does not pick the one correct combination.
Select the correct option: A) 0.9625 B) 159/160 C) 157/160 D) 3/160 E) 0.8625
If Denise does not pick the correct combination in first 150 try, then the correct combination is one of remaining 3850. So Probability = 3850/4000= 
<gadget id="calculator">3850/4000</gadget>
<output>77/80 = around 0.9625</output>
0.9625   answer is 0.9625
<result>A</result>
Denise is trying to open a safe whose combination she does not know. IF the safe has 4000 possible combinations,and she can try 150 different possibilities,what is the probability that she does not pick the one correct combination.