Asked by Anas
A 4-digit pin code can begin with any number except 0,1 & 2. If repetition of the same
digit is allowed, the probability of a pin code begin with 5 and end with a 3 is?
digit is allowed, the probability of a pin code begin with 5 and end with a 3 is?
Answers
Answered by
oobleck
there are 7*10^3 pin codes
there are 1*10^2*1 of the form 5xx3
so P(5xx3) = 100/7000 = 1/70
there are 1*10^2*1 of the form 5xx3
so P(5xx3) = 100/7000 = 1/70
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.