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One Whole: numerator / denominator
Recipracal
repeated multiplication base^exponent
3^0 = 1
4^-1 = 1/4
4^-2 = 1/16
4^-3 = 1/56
be care for negative exponent
-(1/3)^-2
a cell divides into 4 cells after 2hours. how many cells are there after one day?
4^12 = 16777216
