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{{DISPLAYTITLE:4-digit codes sum 17}} ''This conversation was exported from ChatGPT''<ref>{{cite web|title=4-digit codes sum 17|url=https://chatgpt.com/share/69508c1f-2064-8012-8f0a-41df99edf034|publisher=ChatGPT|access-date=2025-12-28}}</ref> == gpt-5-2-thinking == === User: Give me all 4-digit codes such that the sum of the digits is 17 and at least one digit appears twice. === Give me all 4-digit codes such that the sum of the digits is 17 and at least one digit appears twice. Use Python to generate and validate. === Assistant: === === Assistant: python === <syntaxhighlight lang="python">codes = [] for n in range(10000): s = f"{n:04d}" # includes leading zeros digits = [int(ch) for ch in s] if sum(digits) == 17 and len(set(digits)) < 4: # at least one repeated digit codes.append(s) === validate === assert all(sum(int(ch) for ch in c) == 17 for c in codes) assert all(len(set(c)) < 4 for c in codes) print(len(codes)) print("\n".join(codes)) </syntaxhighlight> Output (276 codes): <syntaxhighlight>0089 0098 0188 0377 0449 0494 0557 0566 0575 0656 0665 0737 0755 0773 0809 0818 0881 0890 0908 0944 0980 1088 1169 1178 1187 1196 1277 1448 1466 1484 1556 1565 1619 1646 1655 1664 1691 1718 1727 1772 1781 1808 1817 1844 1871 1880 1916 1961 2177 2249 2258 2267 2276 2285 2294 2339 2366 2393 2429 2447 2474 2492 2528 2555 2582 2627 2636 2663 2672 2717 2726 2744 2762 2771 2825 2852 2924 2933 2942 3077 3239 3266 3293 3329 3338 3347 3356 3365 3374 3383 3392 3437 3446 3455 3464 3473 3536 3545 3554 3563 3626 3635 3644 3653 3662 3707 3734 3743 3770 3833 3923 3932 4049 4094 4148 4166 4184 4229 4247 4274 4292 4337 4346 4355 4364 4373 4409 4418 4427 4436 4445 4454 4463 4472 4481 4490 4535 4544 4553 4616 4634 4643 4661 4724 4733 4742 4814 4841 4904 4922 4940 5057 5066 5075 5156 5165 5228 5255 5282 5336 5345 5354 5363 5435 5444 5453 5507 5516 5525 5534 5543 5552 5561 5570 5606 5615 5633 5651 5660 5705 5750 5822 6056 6065 6119 6146 6155 6164 6191 6227 6236 6263 6272 6326 6335 6344 6353 6362 6416 6434 6443 6461 6506 6515 6533 6551 6560 6605 6614 6623 6632 6641 6650 6722 6911 7037 7055 7073 7118 7127 7172 7181 7217 7226 7244 7262 7271 7307 7334 7343 7370 7424 7433 7442 7505 7550 7622 7703 7712 7721 7730 7811 8009 8018 8081 8090 8108 8117 8144 8171 8180 8225 8252 8333 8414 8441 8522 8711 8801 8810 8900 9008 9044 9080 9116 9161 9224 9233 9242 9323 9332 9404 9422 9440 9611 9800 </syntaxhighlight> == References == <references /> [[Category:ChatGPT Shares]] [[Category:openai]]
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