Welcome to the second part of math puzzles! This time, the questions will be slightly more challenging, but fear not—solving them will only require basic knowledge and keen logic. Here's a hint: all calculations can be performed mentally, without any need for additional tools. Seek out the underlying patterns and deduce the answers to each brain teaser. Explanations will be provided immediately after you submit your answers. Get ready to engage your mind and sharpen your problem-solving skills!
