Asked by Michael
What is the theoretical probability of a computer choosing a 2 digit number between 1 and 100 whose ones digit is greater than the tens digit?
Answers
Answered by
Reiny
lead digit
9, then 8 numbers, e.g. 98 97 96 95 94 93 92 91
8, then 7 numbers
...
2 , then 1 number
number of cases = 9+8+7+6+5+4+3+2+1 = 45
so prob = 45/99 = 5/11
9, then 8 numbers, e.g. 98 97 96 95 94 93 92 91
8, then 7 numbers
...
2 , then 1 number
number of cases = 9+8+7+6+5+4+3+2+1 = 45
so prob = 45/99 = 5/11
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.