Beijing Foreign Studies University doesn't take math as an international economics major, which is the only school I have ever seen that doesn't take math.

The reference link is the enrollment brochure of Beijing Foreign Studies University. See for yourself.

(66) International Economy (0 16 International Business School)

20 ① 10 1 politics

② 20 1 English

③ 7 16 economics (including microeconomics and macroeconomics)

④ 928 International Economics (including international trade and international finance)