Probability 81117

Martin forgot the 4-digit PIN, and he remembered the first three numbers. The fourth number is odd. What is the probability in % that he will be able to determine the PIN? He has only one attempt.

Correct answer:

p =  20 %

Step-by-step explanation:

1,3,5,7,9  p=100 51=5100 1=5100=20%

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