Mean proportional of $a$ and $b$ (positive) is

Mean proportional of $a$ and $b$ (positive) is
  1. $\sqrt{ab}$
  2. $\dfrac{a + b}{2}$
  3. $ab$
  4. $a^{2}b^{2}$

Solution

By definition, mean proportional $= \sqrt{ab}$.

Asked in: MH-SSC-9

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