What the opposite of number 10?

What the opposite of number 10? What is the opposite of what is the opposite operation of multiplication? What's the opposite(反义词) of white? What't the opposite of" coward"? What is the opposite of clean? What’s the number of 翻译句子what's the opposite of the young the opposite of "closest" the opposite of more the opposite of "nearest"() If 1/5 of a number is 12,What is 3/10 of the same number?