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Treebeard's Stumper
13 Feb 98

Crunching 1998

Here's an update of last year's vacation challenge. Use just the four digits 1, 9, 9, 8 in that order, with parentheses and any standard math operations, to make all the numbers 1 to 100. For starters,

1 = 1+(9-9)*8(* is times)
2 = (1^9)+9-8(^ is the power of)
3 = -1+sqrt(9)+(9-8)(square root)
4 = -1+sqrt(9)!-(9-8)(factorial, 3!=1x2x3=6)

Last year, we managed to get all the numbers using the digits of 1997. I'm sure this will not be possible in 2000. How far can we get this year?

Answer


last modified .

Marc Kummel / mkummel@rain.org