In the given figure,$\angle ONY$ = $50^{0}$ and $\angle OMY$ = $15^{0}$ . Then the value of the $\angle MON$ is
1). $30^{0}$
2). $40^{0}$
3). $20^{0}$
4). $70^{0}$
2. If $x+\frac{1}{9x}=4$ , then the value of $9x^{2}+\frac{1}{9x^{2}}$ is
4. The 3rd and 6th term of an arithmetic progression are 13 and -5 respectively. What is the 11th term?
5. If (a+$\frac{1}{a^{2}}$) =3 , then the value of $a^{2}+\frac{1}{a^{2}}$ is
6. Which of the following equations has 3 as a root?
8. In a $\triangle ABC$, AB = AC and BA is produced to D such that AC = AD. Then the $\angle BCD$ is