scienceology Quiz

Question Number 1 ( 2x + 5y - z ) - ( 2x + y - z ) A. 4x-y+7z B. 4y C. -4y Question Number 2 66+66-66+66-66 A. 546 B. 66 C. 78 Question Number 3 what is ratio ? A. comparison B. division C. none above-mentioned Question Number 4 multiply 48 by 78? A. 0987 B. 6668 C. 3744 Question Number 5 how is by percentage divided by ? A. 1000 B. 100 C. 1200