1 Equals… (yep, different from the previous question…)
1 = -1+9-9+2.
Extend this list from 2 through to 100 on the left side of the equals sign. +,-,/,x,(),sqrt,^,factorial(!) are all welcome in this exercise…. but…. the formula must use the four numbers in order 1 9 9 2.
Why??? I hear you ask – because the puzzle was originally written in 1992.