#### If the difference of two supplementary angles is 30°, then the larger angle is

(a) 60°

(b) 75°

(c) 90°

(d) 105°

**Solution:**

#### If x ∈ W, the solution set of the inequation -2 ≤ x < 3 is

(a) {-2, -1,0, 1, 2}

(b) {-1, 0, 1, 2, 3}

(c) {0, 1, 2, 3}

(d) (0, 1, 2}

**Solution:**

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