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1

Don't know about Alpha but ... Range[24] // Select[CoprimeQ[#,24]&] {1, 5, 7, 11, 13, 17, 19, 23}


2

Select[Range[23], GCD[24, #] == 1 &] {1, 5, 7, 11, 13, 17, 19, 23} This also works: Select[Range[23], CoprimeQ[24, #] &]


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Using exact numbers or higher precision numbers gives the result that matches google's output: WolframAlpha["convert 1/4 miles to inches", {{"Result", 1}, "ComputableData"}] (* 15840 in *) WolframAlpha["convert .250 miles to inches", {{"Result", 1}, "ComputableData"}] (* 15840 in *) Another example: WolframAlpha["convert 1/5 miles to inches", ...


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I have found it efficient to enter expressions with units using the "Inline free-form input", and then clicking the InputForm (the bottom line) to replace the entered text with a canonical input form. This gives me an easy-to-read notebook that computes without internet connectivity, at the expense of a mouse click when entering units, and a slight delay ...



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