What do we call a value that is much smaller or larger than the other values in a data set?

A) Center of data
B) Median
C) Range
D) Mean
E) Outlier

One expression below in undefined, and the other expression has a well defined value. which expression is undefined and explain why it has no value. which expression is defined? what is the value of that expression and how do you know? what is a different expression using a trig inverse function that is also undefined?

The larger of two number is 4 less than twice the smaller number. the sum is 41. find the numbers

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class