For positive a and b
a < b is equivalent to 1/a > 1/b.
1/13 < 2/n < 1/10 is equivalent to
13/1 > n/2 > 10/1
26 > n > 20
n = {21,22,23,24,25}
For positive a and b
a < b is equivalent to 1/a > 1/b.
1/13 < 2/n < 1/10 is equivalent to
13/1 > n/2 > 10/1
26 > n > 20
n = {21,22,23,24,25}