SSC CGL 2022 PYQ — Question 60

The correct answer is Option 3 i.e. c³.

Given:

Mean proportional of a and b is c.

Concept Used:

Mean proportional of a and b, c = $\sqrt{ab}$  ....(i)

Explanation:

From equation (i), we get c² = ab

⇒ ab = c²

So mean proportional of a² c and b² c = $\sqrt{a^2 c \times b^2 c}$

⇒ $\sqrt{a^2 \times b^2 \times c^2}$ 

⇒ abc

⇒ c².c = c³

Hence the mean proportional of a² c and b² c is c³.