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80 (Posted on 2015-12-19) Difficulty: 2 of 5
On my 80th birthday my guests were presented with several sets of 4-digit numbers and challenged to create the number 80 using some (or all) of the 4 digits, basic math. signs (+,-,*,/,^ ,concatenation and brackets).
Examples:
n=1268; answers 16+8^2 or 68+12
n=3024; answers 320/4 or 20*4 or 40*2

More (for you to solve):
0269
0246
0468
0579
0126
1234
1469
1579
1645
2359
5555
8249
9999

No Solution Yet Submitted by Ady TZIDON    
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Comments: ( You must be logged in to post comments.)
  Subject Author Date
Some Thoughtsre(2): computer solutions for all but 2359Dej Mar2015-12-20 00:33:57
re: computer solutions for all but 2359Ady TZIDON2015-12-19 16:37:37
Some Thoughtscomputer solutions for all but 2359Charlie2015-12-19 13:15:36
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