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How many times does the number nine appear within whole numbers

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Thread replies: 13
Thread images: 2

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How many times does the number nine appear within whole numbers between one and 100?
>>
>>38390000
2 times cause you have 2 doubles
>>
>>38390000
i dunno, how many 0s appear in your quads
>>
Get a paper and write down all numbers from 2 to 99 then just count how many 9s are on the paper
>>
>>38390000
Eleven times.
>>
looks like 20
>>
Once.
The digit 9 however shows up 20 times.
>>
20 times oregano mister roboto nice quads
>>
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>>38390000
child's play

how many times in a 24 hour period can you get dubs on a clock?
>>
Prelude> let numbers n r = if n == 0 then r else if n == 99 then numbers (n - 1) (r + 2) else if mod n 10 == 9 then numbers (n - 1) (r + 1) else if div n 10 == 9 then numbers (n - 1) (r + 1) else numbers (n - 1) r
Prelude> numbers 100 0
20
>>
I can count 1 to 100 by 0.000001 and get numbers like 0.9999999 so i guess infinite is the right answer
>>
1.9999999* sorry im a retard
>>
>>38390817
>within whole numbers
Thread posts: 13
Thread images: 2


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