Was this a hard math problem, or did you get the answer right? To open this safe, you have to replace the question marks with the correct figures. You can find these figures by determining the pattern ...

Mathematicians have made lots of recent progress on a question called the Mordell conjecture, which was posed a century ago ...

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 provided choices, grid-in items require test ...