2017 AMC 10B Problems/Problem 25
Problem
Last year Isabella took math tests and received different scores, each an integer between and , inclusive. After each test she noticed that the average of her test scores was an integer. Her score on the seventh test was . What was her score on the sixth test?
Cheap Solution
By inspection, the sequences and work, so the answer is $\boxed{\textbf{E } 100}.