If three distinct number $a, b, c$ are in $G.P.$ and the equations $ax^2 + 2bc + c = 0$ and $dx^2 + 2ex + f = 0$ have a common root, then which one of the following statements is correct?
$\frac{d}{a},\frac{e}{b},\frac{f}{c}$ are in $A.P$
$d, e, f$ are in $A.P$
$\frac{d}{a},\frac{e}{b},\frac{f}{c}$ are in $G.P$
$d, e, f$ are in $G.P$
What is the sum of all two digit numbers which give a remainder of $4$ when divided by $6$ ?
If the sum of $n$ terms of an $A.P.$ is $nA + {n^2}B$, where $A,B$ are constants, then its common difference will be
The ratio of sum of $m$ and $n$ terms of an $A.P.$ is ${m^2}:{n^2}$, then the ratio of ${m^{th}}$ and ${n^{th}}$ term will be
If the sum of first $n$ terms of an $A.P.$ is $cn(n -1)$ , where $c \neq 0$ , then sum of the squares of these terms is
The sides of a right angled triangle are in arithmetic progression. If the triangle has area $24$ , then what is the length of its smallest side ?