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 pure logic. When you hop on the Internet and search for something on Google, algorithms are used to sift through a plethora of resources to narrow down that search and get you as close as possible to what you need. Math wears many hats and is an integral part of life.