SOLUTION: sarah cannot completely remember her four digit atm pin number,she does remember first two digit and she knows that each of the last two digits greater than 5,th atm will allow her

Question 856167: sarah cannot completely remember her four digit atm pin number,she does remember first two digit and she knows that each of the last two digits greater than 5,th atm will allow her three tries before it blocks further access.if she andomly guesses the last two digits,what is the probability that she will get access to her account?

Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
Not likely at all.
6,7,8,9
1/4*1/4=1/16
chance
which mean that 15/16 are wrong
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