If $a,\;b,\;c$ are in $H.P.$, then for all $n \in N$ the true statement is
${a^n} + {c^n} < 2{b^n}$
${a^n} + {c^n} > 2{b^n}$
${a^n} + {c^n} = 2{b^n}$
None of the above
If $a, b, c$ are in $GP$ and $4a, 5b, 4c$ are in $AP$ such that $a + b + c = 70$, then value of $a^3 + b^3 + c^3$ is
The common difference of an $A.P.$ whose first term is unity and whose second, tenth and thirty fourth terms are in $G.P.$, is
If ${A_1},\;{A_2}$ are the two $A.M.'s$ between two numbers $a$ and $b$ and ${G_1},\;{G_2}$ be two $G.M.'s$ between same two numbers, then $\frac{{{A_1} + {A_2}}}{{{G_1}.{G_2}}} = $
Let $E$ = $x^{2017} + y^{2017} + z^{2017} -2017xyz$ (where $x, y, z \geq 0$ ), then the least value of $E$ is
If the $A.M.$ and $G.M.$ of roots of a quadratic equations are $8$ and $5$ respectively, then the quadratic equation will be