Thread: Silliness Quiz
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Old 10-10-2012, 10:12 PM   #9572
Hamlet53
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So here is a harder number problem. Consider the sequence of numbers 1 through 9 arranged in order: 1 2 3 4 5 6 7 8 9

Using only the arithmetical operations plus (+) and minus (-) group these numbers without change in order to compute the number 100. The numbers can be merged to form a larger number. Here is one example:

1+2+34-5+67-8+9 = 100

This required use of six + or operations. Find a solution that uses the minimum number of operations. It is less than 6.

Same question only now reverse the order of the numbers; I.e. 9 8 7 6 5 4 3 2 1
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