If $A.M$ and $G.M$ of $x$ and $y$ are in the ratio $p : q$, then $x : y$ is
$p - \sqrt {{p^2} + {q^2}} $:$p + \sqrt {{p^2} + {q^2}} $
$p + \sqrt {{p^2} - {q^2}} $:$p - \sqrt {{p^2} - {q^2}} $
$p:q$
$p + \sqrt {{p^2} + {q^2}} $:$p - \sqrt {{p^2} + {q^2}} $
If $a$ and $b$ are two different positive real numbers, then which of the following relations is true
Let $\frac{1}{16}, a$ and $b$ be in $G.P.$ and $\frac{1}{ a }, \frac{1}{ b }, 6$ be in $A.P.,$ where $a , b >0$. Then $72( a + b )$ is equal to ...... .
The arithmetic mean and the geometric mean of two distinct 2-digit numbers $x$ and $y$ are two integers one of which can be obtained by reversing the digits of the other (in base 10 representation). Then, $x+y$ equals
Let $a, b$ and $c$ be the $7^{th},\,11^{th}$ and $13^{th}$ terms respectively of a non -constant $A.P.$ If these are also the three consecutive terms of a $G.P.$ then $\frac {a}{c}$ is equal to
If $A.M.$ and $G.M.$ of roots of a quadratic equation are $8$ and $5,$ respectively, then obtain the quadratic equation.