Which is the most used language?

The most spoken language in the world is Mandarin, with approximately 1.121 billion native speakers. It is the official language of the People's Republic of China, Taiwan, and Singapore, and is also spoken in many other countries around the world. Mandarin is a tonal language, meaning that the meaning of a word can change depending on the pitch with which it is spoken. It is also a very complex language, with thousands of characters that must be learned in order to read and write.