Class 11

Math

Algebra

Sequences and Series

$3,3+2 ,3+22 ,3+32 ,...$

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If $a,b$ and $c$ are positive real numbers then $ba +cb +ac $ is greater than or equal to.

If $A$ and $G$ are A.M. and G.M. between two positive numbers $a$ and $b$ are connected by the relation A+G=a-b then the numbers are in the ratio

Find the geometric mean between $16$ and $81.$

A right triangle is drawn in a semicircle of radius $21 $ with one of its legs along the diameter. The maximum area of the triangle is

If $A_{1},A_{2}$ be two arithmetic means between $31 $ and $241 $, then their value are

Find $x$, if the given numbers are in A.P. $5$, $(x−1)$, $0$

Find the arithmetic mean between $9$ and $19$.

GM between 0.15 and 0.015 is