Because they represent the retina's activity in the simplest fractions or ratios.
2.
Other orbital resonances correspond to orbital periods whose lengths are simple fractions of Jupiter's.
3.
Number recognition gives way to multiplication and simple fractions.
4.
A " simple fraction " contains no fraction either in its numerator or its denominator.
5.
Monthly rates tended to range from simple fractions to 3 4 percent, perhaps because lenders used Roman numerals.
6.
For example, 1 / 2.5 converts to 2 / 5 as a simple fraction, or 0.4 as a decimal number.
7.
In all other cases the expected way to express the ratio in words would be by taking the simplest fraction.
8.
Inches ( 12 ) and yards ( 32 ) are easily to halve into simple fractions than base-10 SI units.
9.
:: : Presuming you have access to a calculator, assume that the questionner hasn't set a hard question and try the simple fractions.
10.
Real numbers, including many simple fractions, cannot be represented exactly in floating-point arithmetic, and it may be necessary to test for equality within a given tolerance.
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