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+345+678+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
