What numbers lie between 4 and 5 on the number line?

Answer 1

All numbers that have a 4 before a decimal point and some non-zero digits after the decimal point lie between 4 and 5.

If the "between" is inclusive, then the numbers 4 and 5 (which can be followed by a decimal point and any number of zeros) also lie there.

Answer 2

Numbers with a 4 before the decimal and non-zero digits after lie between 4 and 5. If inclusive, 4 and 5 (with any number of zeros after the decimal) are included too.