Posted by Terri on Friday, April 11, 2008 at 4:10pm.
Find the set of all integers, n, for which the fraction
20/(10n*n) is an integer
I used n*n for n squared
I figured that 10n*n must be a factor of 20 and the only answer that ended up working was +3, is this right?

algebra 2  drwls, Friday, April 11, 2008 at 6:24pm
20/(10 n^2) must be 20, 10, 5, 4 , 2 or 1, with n an integer.
n can only be +/ 3 or 0.
Answer This Question
Related Questions
 Math  1. Set I contains six consecutive integers. Set J contains all integers ...
 Integer math  Find 7 A)1/7 B)7 C)7 D)0 Find 14 A)14 B)14 C)1/14 D)0 If two ...
 MATH  Find the only positive integer whose cube is the sum of the cubes of ...
 math  The set S has the property that if a is in S, then a squared + a is also ...
 Algebra  The sum of two consecutive even integers is 118. A. Define a variable ...
 Algebra  The sum of two consecutive odd integers is 56. A. Define a variable ...
 Algebra  The larger of two positive integers is five more than twice the ...
 math  there are 8 consecutive integers that add up to 31. Only two of the ...
 Math11U  A Pythagorean Triple is a set of integers that satisfy the Pythagorean...
 algebra  Find two consecutive positive integers such that the sum of their ...
More Related Questions