Here's why:
* Multiple Official Languages: Some countries have more than one official language. For example, India has 22 official languages, including English.
* De Facto vs. De Jure: In some countries, English is widely spoken and used in government and education, but it may not have official status. This is often the case in former British colonies.
* Varying Levels of Usage: Even in countries where English is an official language, the level of proficiency and usage can vary greatly.
However, based on common definitions and usage, here are some estimates:
* Around 60 countries have English as their sole official language.
* Over 100 countries have English as at least one of their official languages.
It's important to remember that these are just estimates, and the situation is constantly evolving.