There are actually different classifications of rounding; general, engineering, scientific, monetary.
The over riding rule is to keep the digits that are meaningfull.
In general if the next number to be dropped is less than 5 make no change,
if the next number to be dropped is more than 5 then increase by one,
if the next number to be dropped is 5 then then increase if it makes makes an even digit.
you specify tenths place; so it becomes 13.6
The over riding rule is to keep the digits that are meaningfull.
In general if the next number to be dropped is less than 5 make no change,
if the next number to be dropped is more than 5 then increase by one,
if the next number to be dropped is 5 then then increase if it makes makes an even digit.
you specify tenths place; so it becomes 13.6
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13.59728000
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13.6
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13.6
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13.6
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13.6
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13.59 or 13.6