ABCD is a cyclic trapezium whose sides AD and BC are parallel to each other. If $\angle ABC$ = $72^{0}$, then the measure of the $\angle BCD$ is
1). $162^{0}$
2). $18^{0}$
3). $108^{0}$
4). $72^{0}$
1. Which one of the following is a factor of x3 + 5x + 18?
3. The angle in a semi- circle is
6. If a - b = 1 and ab = 6, then what is the value of $a^{3}-b^{3}$?
7. If $x+\frac{1}{x}\neq0$ and $x^{3}+\frac{1}{x^{3}}=0$ then the value of $(x+\frac{1}{x})^{4}$ is?
9. If x + y = 12 and xy = 32, then what is the value of x2 + y2