Given that a has a remainder of 6 and b has a remainder of 1 when divided by 14, what is the remainder of x when divided by 14, given x is an integer solution to x2−2ax+b=0
This problem is part of the question set Mathematics in Anime. It appears in the anime Puella Magi Madoka Magica. Students attending the Math class are only 14 years old, yet they are expected to solve this question on the spot!