[ ˌkɒmbɪnə'tɒrɪks ]
■ plural noun [treated as sing. ] the branch of mathematics dealing with combinations of objects belonging to a finite set in accordance with certain constraints.
[ ˌkɒmbɪnə'tɒrɪks ]
■ plural noun [treated as sing. ] the branch of mathematics dealing with combinations of objects belonging to a finite set in accordance with certain constraints.
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004