e.g. In 2012

1. In twenty twelve
2. In two thousand twelve

(Can we read either way? Are both readings correct?)

Yes, both are correct.

Yes, both readings "In twenty twelve" and "In two thousand twelve" are correct and acceptable ways to read the year 2012. The choice of reading depends on personal preference and the context in which it is being used.

"In twenty twelve" is a more modern and concise way of reading the year, commonly used in informal conversations and casual writing. It is considered to be a more streamlined way to say the year, as it eliminates the need to mention the "two thousand" part.

"On the other hand, "In two thousand twelve" is a more traditional and formal way of reading the year. It is typically used in more formal writing or in situations where it is important to emphasize the precision and clarity of the year. It is also commonly used when referring to other years in the same time period, such as "In two thousand ten" or "In two thousand twenty".

Ultimately, both readings are valid and widely used, so you can choose whichever one you prefer or find appropriate for the given context.