yo sup??
as mentioned earlier XUY is simply the summation of all the unique elements of X and Y
S=XUY
={-1,0,1,2,5}
Therefore your answer is option 1 ie
1.{-1,0,1,2,5}
Hope this helps.
Mean = Sum of all data divided by number of data
= (6 + 14 + 10 + 6 + 4 + 8) / 6 = 8. (C)
Let x be the number of snack packs, then
4 + 14x < 25
14x < 25 - 4
14x < 21
x < 21/14
x < 1.33
