MathLetters
Region: US
Monday 20 June 2022 21:16:20 GMT
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upandup5678 :
is there an algorithm that checks digits 100% correctly?
2022-06-20 21:32:23
455
Klaus Trophobie :
Or simpler: also add the check digit and see if the sum ends with 0.
2022-06-21 06:04:09
6
Marvin :
I learned something new today. Thanks!
2022-06-20 21:25:59
1058
Devine Whisper :
Scammers must be taking notes
2022-08-05 20:22:02
0
Storm 🇵🇸 :
why be so complicated? why not just sum up first 9 digits, modulo 10?
2022-06-21 00:23:49
3
John Dyess :
barcodes also have a check digit which is why they won't scan if the reading is incorrect
2022-06-20 23:43:09
51
user3909787564513 :
In case you are interested in how this algo works more deeply, google „cs50x credit“ and click on the first result. Its a computer science homework
2022-06-22 19:24:54
0
Dodreyka :
if its only for transcription i wonder why they didnt just add up all the numbers and use the last number of the result as the check
2022-06-21 05:14:44
1
Zogg from Betelgeuse :
Fun fact: The last digit of π is also a check digit. 😁
2022-06-21 03:11:56
14
michael :
Wow
2022-06-24 03:03:20
3
NotActuallySteve :
Not all cards do I’ve had cards when renewed or replaced all that happens is last digit goes up by 1-2
2022-06-21 08:03:16
1
el_perro_ayayay :
Me taking notes: 5 is not equal to 3
2022-08-06 20:57:18
1
Yummyte :
anyone in CS50x here?
2022-06-21 12:36:54
3
Jack :
OK this is actually really cool
2022-08-30 22:35:02
1
Megan Lea :
Social insurance numbers have a cool calculation too!
2022-07-06 00:40:04
0
Martin▕⃝⃤ :
Please show a case where it breaks
2022-08-10 00:02:27
0
Dan ༼ 🪳 :
Neat
2022-07-06 00:16:01
0
Scott :
the spooky thing about this is mine was 67 too lol
2022-06-26 00:36:59
0
Bloo Fosters :
Oh Shit! This is very similar to how we check if a doctor's DEA number is valid! 😳
2022-06-24 09:09:01
0
Jay 🤙🏻 :
Did a little google and this number you used as an example is the exact same example used on the Luhn algorithm page on Wikipedia
2022-07-03 00:28:22
0
GMTUSDT :
how is it generated?
2022-07-12 04:20:19
0
rebelstasia :
wooooah 🧡
2022-06-27 03:47:56
0
mahlerdiscovery :
Huh?
2022-06-27 10:11:12
0
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