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|The five 3īs (Posted on 2008-07-07)
This is a real story. A long long time ago, based on the "Four fours" problem, I wondered if I could do the same using exactly five 3īs, the restrictions a bit tighter: I could use only the 4 basic math operations, exponentiation, factorial, and all parentheses I may need. Besides, I didnīt disallow me to join two "3īs" to make "33".
Using this, and only this, I succeeded in writing expressions for all integers from 0 to 100.
To narrow your work, since a great number of integers can be easily obtained, can you find expressions for 47, 50, 56, 58, 64, 70, 71, 73, 74, 76, 77, 85, 88, 94, and 95?
re(2): Values from one
| Comment 16 of 35 |
(In reply to re: Values from one
by Dej Mar)
Dej Mar, what I meant to say with "tighter restrictions" was to disallow square root, decimal point (.3), and a dot over the number to mean periodic decimal (.3'), which was allowed in the "four fours" problem. I became surprised when I achieved all the numbers using just the basic math operations, factorial, and exponentiation.
Posted by pcbouhid
on 2008-07-07 22:53:44
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