If a point a is located at 2/3 and there are 10 points between a and b what could be the possible coordinates for point b

How do you answer this question? (step by step)

Hiroaki wants to find 3 3/4 - 7/8 explain why he must rename 3 3/4 to do the subtraction.

When you have 25 numbers, and jake picks 3 random numbers and puts them back, what is the chance bob has of picking those 3 numbers when he picks 6 random numbers (without putting them back)? explain.