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Shortest way to a million (Posted on 2020-12-03) Difficulty: 3 of 5
The number one million can be presented by 2 digits : 1000000, i.e. a chain of 7 digits.
Another possibility is 10002. 3 distinct digits, 5 characters. I

You are requested to express one million, using a single digit d plus some operators creating a chain of n characters ( digits and operators).
What digit is your choice and how low is the minimal n?

a). The permissible operators are : + - * / and ^.

b). Sqrt and ! are allowed as well.”

. REM: count digits and operators only, ignore ^, concatenation and brackets; e.g. (77-7)/7 is counted as 6.

No Solution Yet Submitted by Ady TZIDON    
Rating: 4.5000 (4 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Some Thoughts A start | Comment 1 of 15
Using any digit you can use 14 symbols:

7777777 - 777777 = 1000000

Here's 13 symbols using 4:
(4*4^4-4!)^((4+4)/4)

  Posted by Jer on 2020-12-03 09:57:40
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