For the replacement set = {-8, -6, -4, -2, 0, 2, 4, 6, 8}, which of the following is not a solution set ?

1. {-8, -6, -5, -4, 6}

2. {-6, -2, 0, 2, 6}

3. {-8, -4, -2, 0, 2}

4. {-2, 0, 4, 8}

The solution set for the inequation -2x + 7 ≤ 3, x ∈ R is :

1. {x : x ∈ R, x < 2}

2. {x : x ∈ R, x > 2}

3. {x : x ∈ R, x ≤ 2}

4. {x : x ∈ R, x ≥ 2}

For 7 - 3x < x - 5, the solution set is :

1. x > 3

2. x < 3

3. x ≥ 3

4. x ≤ 3

x(8 - x) > 0 and x ∈ N gives :

1. 0 ≤ x < 8

2. 1 < x ≤ 8

3. 0 < x < 8

4. 0 ≤ x ≤ 8