algebra - Basic Math Tutor Practice Problem - Six Sigma Math: Problem 1: Solve the sigma math `sum_(y=1)^6` y2. Answer: 91. I am planning to write more post on Math Translation and its example and, step by step answers to math problems and its problem with solution. Keep checking my blog. Problem 2: What is the value sigma `sum_(s=1)^6` (1 + s)?