1. Which of these is not divisible by 3?
2. Find the HCF of 2, 3 and 5
3. Find the LCM of 2³ × 3⁴ × 7 and 2² × 3⁵ × 7²
6. All these are integers except ____
7. Change 643.2 to standard form
8. The prime factors of 26 are
9.The smallest of these numbers is _____
10. Which of these is in standard form?