It would have to be 749.99999999..... or something like 750.000000000000000000000000001
Thing is 749.99999999999... is actually 750.
The numbers nearest in value to 750 are 749 and 751, as both are one unit away. For a more precise decimal approximation, values like 749.99 or 750.01 can be considered. Generally, in the context of rounding, either 749 or any number that rounds to 750 fits the criteria.
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