What are the 4 most common languages in world?

The 4 most common languages in the world, based on the number of native speakers, are:

1. Mandarin Chinese: Spoken by over 1 billion people.

2. Hindi: Spoken by over 600 million people.

3. English: Spoken by over 370 million people.

4. Spanish: Spoken by over 500 million people.

It's important to note that these numbers can fluctuate, and different sources may provide slightly different figures.