Are You Logical Enough For These?
This is an alternating number of subtraction series. First, 1 is subtracted, then 2 is added. 10 16 13 15 X is a subset of Y and Y is a subset of Z. Which of the following statements must be true? If 1 is in Y, then 1 is in X. If 2 is in Z, then 2 is in X. If 3 is in Z, then 3 is in Y.
12 Qs