Which of the following is the solution set of x < 0 when the replacement set is the set of whole numbers?

1. {0}

2. {….-3, -2, -1, }

3. {…….,-3, -2, -1, 0}

4. Null set

Which of the following is the solution set of x ≤ 3 when the replacement set is the set of integers?

1. {0, 1, 2, 3}

2. {……,-2,-1, 0, 1, 2}

3. {………..,-2,-1, 0, 1, 2, 3}

4. {…..,-2,-1, 1, 2, 3 }

Which of the following statements is true? (r is a positive integer)

1. If p ≥ q, then $-\dfrac{p}{r} \le -\dfrac{q}{r}$

2. If p ≤ q then pr ≥ qr

3. If p > q, then -pr > -qr

4. If p < q then p - r > q - r

Graphical representation of following inequation on the number line is {x : -3 < x < 2, x ∈ I}

1.

2.

3.

4.