(1), called (m+n)/2= 180,

( 1/m+ 1/n)/2 = 1/ 10

In order to solve the equation composed of these two equations, we must:

m 1=30，n 1 = 6；

m2=6，n2=30 .

(2) It may be that the title is wrongly written, and the inequality symbol in m≠n may be written as the less than sign or greater than sign.

If m < n or m > n is known, you only need to select a set of answers (1) from the answers in question.