What is the average (arithmetic mean) of the numbers 21, 22, 23, 23, 24, and 25?
Select the correct option:
A) 23.0
B) 22.5
C) 21
D) 24
E) 23

Rationale: "{ 21 , 22 , 23 , 23 , 24 , 25 } = { 23 - 2,23 - 1 , 23 , 23,23 + 1,23 + 2 } - - > the average = 23 . answer : e ."
Answer: E