math
posted by tayloir .
I do not undeerstand this question for homework.
Determine if the set is closed for the given operation.
1. yes or no The set of positive fractions for division.
2. yes or no=The set of positive integers for subtraction.
Can someone help me?
Respond to this Question
Similar Questions

math
I do not undeerstand this question for homework. Determine if the set is closed for the given operation. 1. yes or no The set of positive fractions for division. 2. yes or no=The set of positive integers for subtraction. Can someone … 
mathematics help me plz.....
under which operation is the set {1,0,1} closed? 
help me
under which operation is the set {1,0,1} closed? 
Math
The average of a set of five different positive integers is 360. The two smallest integers in the set are 99 and 102. What is the largest possible integer in this set? 
math
I am really confused about sets. Could you explain to me if the following are opened or closed sets and why? 
Maths
A give an example of a function whose domain equals the set of real numbers and whose range equals the set? 
11th grade mths
Please check urgently .I have to submit the assignment A give an example of a function whose domain equals the set of real numbers and whose range equals the set? 
Maths(please check urgently
Please check urgently .I have to submit the assignment A give an example of a function whose domain equals the set of real numbers and whose range equals the set? 
math
Which set of integers is not closed under what operation? 
MATH combinatorics HELP!!!!!
Determine the least positive integer n for which the following condition holds: No matter how the elements of the set of the first n positive integers, i.e. {1,2,…n}, are colored in red or blue, there are (not necessarily distinct) …