Evaluate

7. ข้อใดเรียงลำดับจากมากไปหาน้อย่ดด้ถูกต้อง \( \begin{array}{l}\text { ก. } \frac{1}{2}, \frac{2}{3}, \frac{3}{5}, \frac{4}{10} \\ \text { ข. } \frac{2}{3}, \frac{3}{5}, \frac{1}{2}, \frac{4}{10} \\ \text { ค. } \frac{4}{10}, \frac{1}{2}, \frac{2}{3}, \frac{3}{5} \\ \text { ง. } \frac{3}{5}, \frac{4}{10}, \frac{1}{2}, \frac{2}{3}\end{array} \)

Q2 Explain why magnosium chlorida ean conduct electricity in molten state. flagrisisus Chleride is a ion ic bond.

The following statement is false. r: All humans are taller than seven feet. Use the representation of \( r \) to express the symbolic statement \( \sim r \) in words. Verbal statements should begin with "all," "some," or "no." What can you conclude about the resulting verbal statement? Choose the statement below that expresses the symbolic statement \( \sim r \) in words.

Solve and chock. \( \frac{1}{6} \mathrm{~b}-6=7 \) \( \mathrm{~b}=\square \)

Scientific Notation-Tutorial-Part 2-LevelH grain of sand has a thickness of about \( 1 \times 10^{-3} \) meter. About how many grains of sand would it take to match the thickness of human skin?