Bunuel wrote:
sacmanitin wrote:
Denise is trying to open a safe whose combination she does not know.
IF the safe has 4000 possible combinations,and she can try 75 different
possibilities,what is the probability that she does not pick the one
correct combination.
1 1
2 159/160
3 157/160
4 3/160
5 0
please explain in detail ,how to approach this kind of question
IF the safe has 4000 possible combinations,and she can try 75 different
possibilities,what is the probability that she does not pick the one
correct combination.
1 1
2 159/160
3 157/160
4 3/160
5 0
please explain in detail ,how to approach this kind of question
When trying the first time the probability Denise doesn't pick the correct combination=3999/4000
Second time, as the total number of possible combinations
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