- A$(-\infty, 2)$
- ✓$(-2, \infty)$
- C$(2, \infty)$
- D$[2, \infty)$
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If x, 2y and 3z are in A.P. where the distinct numbers x, y and z are in G.P., then the common ratio of the G.P. is:
$3$
$\frac{1}{3}$
$2$
$\frac{1}{2}$
The sum of the digits in unit place of all the numbers formed with the help of 3, 4, 5 and 6 taken all at a time is.
If sets A and B are defined as $\text{A}=\Big\{(\text{x},\text{y})|\text{y}=\frac{1}{\text{x}},0\neq\text{x}\in\text{R}\Big\}\ \text{B}=\{(\text{x},\text{y})|\text{y}=-\text{x},\text{x}\in\text{R}\},$ then
$\text{A}\cap\text{B}=\text{A}$
$\text{A}\cap\text{B}=\text{B}$
$\text{A}\cap\text{B}=\phi$
$\text{A}\cup\text{B}=\text{A}$
If the fifth term of the expansion $\Big(\text{a}^{\frac{2}{3}}+\text{a}^{-1}\Big)^{\text{n}}$ does not contain 'a'. Then n is equal to: