Grid-in questions, or student-produced responses, account for about 22% of the 58-question SAT math section. As opposed to multiple-choice questions, where the correct answer is always one of the ...

Math is not everyone’s favorite, understandably. Hours of math homework and difficult equations can make anyone sour on the subject. But when math problems are outside of a school setting, there’s no ...

The rules of Sudoku dictate that every row, column and 3×3 bolded box in the completed grid must contain the digits 1 through 9 exactly once. A surprising fact emerges from these simple rules. In ...