Timeline for Find all ways to make 21 by using each of 1, 5, 6 and 7 once, using the four primary binary operations (+, -, *, /)
Current License: CC BY-SA 3.0
4 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 18, 2017 at 17:41 | comment | added | bobbym | @ubpdqn, you are very welcome. | |
| Mar 18, 2017 at 8:58 | comment | added | ubpdqn | thanks for introducing me to Groupings`+1:) | |
| Mar 18, 2017 at 8:01 | history | edited | bobbym | CC BY-SA 3.0 |
added 7 characters in body
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| Mar 18, 2017 at 7:56 | history | answered | bobbym | CC BY-SA 3.0 |