After watching the video below, explain what is happening in your own words. What percent of the original dollar size will the 4th copy be?

Answer these questions showing your work plz

Adrawer contains 12 identical white socks, 18 identical black socks and 14 identical brown socks. what is the least number of socks you must choose, without looking, to be certain that you have chosen two socks of the same colour?

Solve for n? [tex]z = \frac{3}{4} mn[/tex]