Can the union of two sets have a solution of a nut shell

Unfortunately, like several other branches of mathematics, set theory has its own ... You can show that something is in a set in two simple ways: ... 1 and 100', or 'all numbers between 1 and 10', depending on your problem. ... The union of two sets is their combined elements, that is, all the elements that are in either set.

Step-by-step explanation:

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)