MCQ
The value of $15 \sqrt{15} \div 3 \sqrt{5}$ is
- A$5 \sqrt{3}$
- B$3 \sqrt{5}$
- C3
- D5
✓
Answer
(a) $5 \sqrt{3}$
$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\frac{15 \sqrt{15}}{3 \sqrt{5}}$
$\begin{aligned} Explanation:& =\frac{(3 \times 5) \sqrt{3} \times \sqrt{5}}{3 \sqrt{5}} \\ & =5 \sqrt{3}\end{aligned}$
$\quad$$\quad$$\quad$$\quad$$\quad$$\quad$$\frac{15 \sqrt{15}}{3 \sqrt{5}}$
$\begin{aligned} Explanation:& =\frac{(3 \times 5) \sqrt{3} \times \sqrt{5}}{3 \sqrt{5}} \\ & =5 \sqrt{3}\end{aligned}$
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