Bar and bat mitzvah mean, literally, son and daughter of the commandment.. Bat mitzvah is Hebrew, while bar mitzvah, historically a much earlier ceremony, is Aramaic. The word bar is the Aramaic equivalent of the Hebrew ben (son of) .
In math, the mean is the average of a set of numbers. To determine the mean, add all numbers in a set and take this answer and divide it by how many numbers are in the set. Continue Reading.
Math is a Language of Symbols. In math, symbols are the main part of the concise, specific language that we use. In this lesson, we will try to stick with the symbols that would be used most often.Note that a number of symbols are not always available in certain kinds of software, so we have alternatives.quare brackets that look like this: and curly brackets that look like this: { }. are used to group items together. Grouping symbols are used to tell you to do the math of the items in the group first.