Answer:
A is a subset of B i believe that's the answer
They need 4 more because 12+50+34=96 96-100 is 4 hope this helps ya
C; the first and last letters in each group is connected, after U and V being first and last it should be W and X being first and last.
Answer:
n = the first
n + 1 = the 2nd
n + 2 = the 3rd
n(n + 2) - (n + 1) = 10(n + 2) + 1
n2 + 2n - n - 1 = 10n + 20 + 1
n2 - 9n - 22 = 0
(n - 11)(n + 2) = 0
If two factors = 0, at least one must = 0.
n - 11 = 0
n = 11
11,12,13
n + 2 = 0
n = -2
-2,-1,0
