HELP PLEASE ASAP?!? 1. What is the positive difference between the greatest and least prime factors of 231?

2. What is the least positive integer that is divisible by 2, 3, 4, 5, 6, 7, and 8?

3. Multiply 10.5 by 1.05 and write the product as a common fraction.

4. How many odd whole numbers are factors of 180?

5. Find the greatest common divisor of 9,009 and 14,014.

6. Express .28^_ as a common fraction. (_ is the line on top of 8 only so 8 goes on and on )

7. How many natural-number factors does N have if N = 2^3 x 3^2 x 5^1?