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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?
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Sep 28, 2019
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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
high-school
Kishan Gajjar
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Kishan Gajjar
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Actually the correct probablity should be:
The answer given by the previous user is incorrect.
Pindol
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Sep 29, 2019
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Pindol
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For each choice of the first two digits you have 10
choices for the third digit. Thus you have 10x10x10 = 1000 choices for the first three digits. Finally you have 10
choices for the fourth digit and thus there are 10x10x10x10 =
10 000
possible 4 digit combinations from
0-9
.
Luis Paulo Pinto
answered
Oct 3, 2019
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Luis Paulo Pinto
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