Mark ( ) against the correct answer in the following. If a, b, c … - Vidyadip

MCQ

Mark $(\checkmark)$ against the correct answer in the following.
If $a, b, c$ are in proportion then:

A
$a² = bc$
✓
$b² = ac$
C
$c² = ab$
D
None of these.

✓

Answer

Correct option: B.

$b² = ac$

$\Rightarrow\frac{\text{a}}{\text{b}}=\frac{\text{b}}{\text{c}}$
$\Rightarrow\text{b}^2=\text{ac}$

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