Q1. What is the symbol called that looks like a capital E, and means to add all your terms in a Finite or Infinite series? A1.

Q2. Sometimes we look at a partial sum of a series, that is, from the 1st term to the 10th term, even when 12 terms are listed. How many numbers (terms) will be added together in this series? A2.

Q3. Now try this one, how many numbers (terms) will be added together in this partial sum, 6th term to the 25th term? A3.

(*Hint: This is known as the upper bound number subtract the lower bound number plus the number one)