Question:
The shaded part of the number line in the given figure can also be described as
(a) (–∞, 1) ∪ (2, ∞)
(b) (–∞, 1] ∪ [2, ∞)
(c) (1, 2)
(d) [1, 2]
Solution:
Since shaded region does not include 1 and 2 but includes every value before 1 and every value after 2.
Hence, shaded region is given by (–∞, 1) ∪ (2, ∞)
Hence, the correct answer is option A.