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alexdok [17]
3 years ago
13

Jack has a pin number that he uses to access his bank account. his code consists of 4 different numbers from 0 to 9. what is the

probability that someone could guess his code?
Mathematics
2 answers:
Ronch [10]3 years ago
8 0
Actually the correct probablity should be:
\frac{1}{5040}
The answer given by the previous user is incorrect.
Tamiku [17]3 years ago
5 0
For each choice of the first two digits you have 10<span> choices for the third digit. Thus you have 10x10x10 = 1000 choices for the first three digits. Finally you have </span>10<span>choices for the fourth digit and thus there are 10x10x10x10 = </span>10 000<span> possible 4 digit combinations from </span>0-9<span>.</span>
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