Find the solution set of each of the following inequations :

(i) 2 < x - 3 < 7, x ∈ N

(ii) 10 < 4x - 5 < 21, x ∈ N

(iii) 2 - x < 4x - 7 < 11 - 2x, x ∈ Z

(iv) 4 - 2x < 3x + 19 < 42 - 5x, x ∈ Z

(v) -5 < $\dfrac{x}{2}$ - 3 < $\dfrac{5}{2}$, x ∈ Z

(vi) 9 - $\dfrac{2}{3}$x < 5x - 11 < 17 - $\dfrac{x}{4}$, x ∈ Z

If a > b and m < 0, then which of the following is correct :

1. am < bm
2. am = bm
3. am > bm
4. am and bm cannot be compared

The solution set of the inequality 17 - 4x < 7, x ∈ Z is

1. {1, 2, 3, ……………}
2. {2, 3, 4, ……………}
3. {3, 4, 5, ……………}
4. {4, 5, 6, ……………}

Which one of the following is not a solution to the inequality 2x > 18 - 5x?

1. 7
2. 5
3. 3
4. 1