I need to get as close to 60 as possible, but i can only use + and - and the following numbers once: 31,5 5,4 18,9 18,89 10,8 9 9,01 15,3
i dont need to use all the numbers
$${\mathtt{31}}{\mathtt{\,\small\textbf+\,}}{\mathtt{18}}{\mathtt{\,\small\textbf+\,}}{\mathtt{15}}{\mathtt{\,-\,}}{\mathtt{4}} = {\mathtt{60}}$$
.nope,
its 31.5 and 5.4 and 18.9 and 18.89 and 10.8 and 9 and 9.01 and 15.3 i can use
Happy and Brittany,
Some countries use a comma instead of a point to indicate a decimal number.
The question asker is telling you that they are from one of these countries.
So the numbers are
31.5, 5.4, 18.9, 18.89, 10.8, 9, 9.01, 15.3 The magic number is 60 (+and - only)