# Are parentheses and brackets the same thing?

## Are parentheses and brackets the same thing?

Brackets and Parentheses. The difference between a 'bracket' and a 'parentheses' can be a bit confusing. Generally, 'parentheses' refers to round brackets ( ) and 'brackets' to square brackets [ ]. However, we are more and more used to hearing these referred to simply as 'round brackets' or 'square brackets'.

## What is the difference between brackets and parentheses in interval notation?

The numbers are the endpoints of the interval. Parentheses and/or brackets are used to show whether the endpoints are excluded or included. For example, [3, 8) is the interval of real numbers between 3 and 8, including 3 and excluding 8. … For example, ]5,7[ refers to the interval from 5 to 7, exclusive.

## Do you do parentheses or brackets first?

I will simplify from the inside out: first the parentheses, then the square brackets, being careful to remember that the "minus" sign on the 3 in front of the brackets goes with the 3. Only once the grouping parts are done will I do the division, followed by adding in the 4.

## What are [] used for?

Fitting everything into a sentence can be tricky, but this is where brackets are useful. Brackets (parentheses) are punctuation marks used within a sentence to include information that is not essential to the main point.