A unit fraction is a rational number written as a fraction where the numerator is one and the denominator is a positive integer. A unit fraction is therefore the reciprocal of a positive integer, 1/n. Examples are 1/1, 1/2, 1/3, 1/4 etc.
Read more about Unit Fraction: Elementary Arithmetic, Modular Arithmetic, Finite Sums of Unit Fractions, Series of Unit Fractions, Matrices of Unit Fractions, Adjacent Fractions, Unit Fractions in Probability and Statistics, Unit Fractions in Physics
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