There are 10 students in a class. A teacher would like to split all students into three teams. In how many ways the teacher can do this if each team must have at least three students? Please answer and show your work.

Determine whether the set of whole numbers is closed under addition. explain why the set is or is not closed. give an example.

What is the ratio of the length of an object in yards to the length of the same object in miles?

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.