If 7 + 3x ≥ 5 -$\frac{x}{2}$ and 2x + 3 ≤ 5 - 2x; then x can take which of the following values?
1). 0
2). 1
3). 2
4). -1
2. O is the incentre of $\triangle ABC$ and $\angle A$ = $30^{0}$, then $\angle BOC$ is
4. What is the value of (A + B)3 – (A – B)3 – 6B(A2 – B2) if A = 125 and B = 8?
7. If a + b = 8 and $a^{2} + b^{2} = 34$, then value of ab is
8. If x = 4 + √5 and y = 4 – √5, then the value of \(\frac{{{x^2} + {y^2}}}{{{x^3} + {y^3}}}\) is –