Timeline for Four ones and four zeros
Current License: CC BY-SA 4.0
36 events
| when toggle format | what | by | license | comment | |
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| Mar 16, 2023 at 18:09 | comment | added | isaacg | Note that we can avoid the double factorial in 187 by reusing Retudin's solution: (11!)!*.01 + 1 + (0! + 0! + 0!)!. But there's no need, as both are allowed. | |
| Mar 16, 2023 at 17:22 | history | edited | Weather Vane | CC BY-SA 4.0 |
added 173 from Retudin
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| Mar 16, 2023 at 16:56 | comment | added | Bernardo Recamán Santos | Better write the above as (11!)! x 0.01 - (0!+0!+0!)! | |
| Mar 16, 2023 at 16:50 | comment | added | Retudin | 173 = 11!! x .01 - 1 - (0!+0!+0!)! | |
| Mar 16, 2023 at 16:44 | history | edited | Jaap Scherphuis | CC BY-SA 4.0 |
Fixed repeated factorials, added isaacg's 199 solution.
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| Mar 16, 2023 at 15:40 | comment | added | isaacg | 199 = (100! + 0!)/(.1^11) - 0!. This uses the fractional point with no leading digit, and it's unclear whether that's allowed, so I've asked for clarification | |
| Mar 16, 2023 at 15:31 | comment | added | Weather Vane | So either mine needs to be deleted, or the others need parentheses applying. | |
| Mar 16, 2023 at 15:29 | comment | added | Weather Vane | @JaapScherphuis (I thought) many of the solutions listed had a double factorial!! | |
| Mar 16, 2023 at 15:08 | comment | added | Jaap Scherphuis | @WeatherVane Although factorial are allowed, I'm not so sure double factorials are. It hasn't been needed so far, and earlier expressions with $!!$ were actually repeated factorials (i.e. $11_2!!=3!!=(3!)!=6!=720$, whereas you used $(11_2!)!!=(3!)!!=6!!=6\cdot4\cdot2=48$). | |
| Mar 16, 2023 at 14:32 | history | edited | Weather Vane | CC BY-SA 4.0 |
added 187
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| Mar 16, 2023 at 14:28 | comment | added | Jaap Scherphuis | @WeatherVane You mean loopy walt. All I did in my edit was a little formatting. | |
| Mar 16, 2023 at 14:22 | comment | added | Weather Vane | @JaapScherphuis you beat me to 188 and 190 by a short stroke, but I added 187. | |
| Mar 16, 2023 at 14:21 | history | edited | Weather Vane | CC BY-SA 4.0 |
added 187
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| Mar 16, 2023 at 14:14 | history | edited | Jaap Scherphuis | CC BY-SA 4.0 |
Formatting, and struck out solved numbers from the unsolved list.
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| Mar 16, 2023 at 13:57 | history | edited | BlueHairedMeerkat | CC BY-SA 4.0 |
added 25 characters in body
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| S Mar 16, 2023 at 12:18 | history | suggested | CommunityBot | CC BY-SA 4.0 |
added missing line breaks
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| Mar 16, 2023 at 11:14 | review | Suggested edits | |||
| S Mar 16, 2023 at 12:18 | |||||
| Mar 16, 2023 at 5:50 | comment | added | loopy walt | 188 = ((0!+0!)^11! - 0!) x 11 - 0! | |
| S Mar 16, 2023 at 5:21 | history | edited | ACB | CC BY-SA 4.0 |
\text{username}
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| S Mar 16, 2023 at 5:21 | history | suggested | MountainEucalyptus | CC BY-SA 4.0 |
added 158 and 159
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| Mar 16, 2023 at 4:54 | review | Suggested edits | |||
| S Mar 16, 2023 at 5:21 | |||||
| Mar 16, 2023 at 4:50 | history | edited | isaacg | CC BY-SA 4.0 |
Fixed repeated frac typo
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| Mar 16, 2023 at 4:40 | history | edited | isaacg | CC BY-SA 4.0 |
Corrected typo on 162
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| Mar 16, 2023 at 4:31 | comment | added | isaacg | 158=(11^100-0!-0!)/.1 | |
| Mar 16, 2023 at 3:03 | comment | added | loopy walt | 164 = 10 x (11^100 + 0!) | |
| Mar 16, 2023 at 2:51 | comment | added | loopy walt | 190 = (0!+0!)^11! x 11 - 0!-0! | |
| Mar 16, 2023 at 2:45 | comment | added | loopy walt |
Typo at 162? Did you mean 10 x 11^100 ?
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| Mar 16, 2023 at 0:30 | history | edited | BlueHairedMeerkat | CC BY-SA 4.0 |
added 2072 characters in body
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| Mar 15, 2023 at 21:16 | comment | added | Bass | 149=10010101, 150=10010110 :-) | |
| Mar 15, 2023 at 19:42 | comment | added | Weather Vane | @loopywalt good one. Can you carry on? | |
| Mar 15, 2023 at 19:41 | comment | added | loopy walt | 148 = (11!^10+0!)x100 | |
| Mar 15, 2023 at 16:12 | comment | added | BlueHairedMeerkat | @JaapScherphuis Great spot! Have updated. | |
| Mar 15, 2023 at 16:12 | history | edited | BlueHairedMeerkat | CC BY-SA 4.0 |
added 309 characters in body
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| Mar 15, 2023 at 15:05 | comment | added | Jaap Scherphuis | Like Weather Vane, you stopped just before an easy one: $135=10000111$. I got stuck at 107 cause I didn't think of the 0! trick. Very nice! | |
| Mar 15, 2023 at 14:42 | history | edited | BlueHairedMeerkat | CC BY-SA 4.0 |
added 35 characters in body
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| Mar 15, 2023 at 14:28 | history | answered | BlueHairedMeerkat | CC BY-SA 4.0 |