MCQ
Tick $(\checkmark)$ the correct answer: $\sqrt[3]{125\times64}=\ ?$
- A$100$
- B$40$
- ✓$20$
- D$30$
✓
Answer
Correct option: C.
$20$
$\sqrt[3]{125\times64}$
$=\sqrt[3]{5\times5\times5\times4\times4\times4}$
$=\sqrt[3]{5^3\times4^3}$
$=5\times4$
$=20$
$=\sqrt[3]{5\times5\times5\times4\times4\times4}$
$=\sqrt[3]{5^3\times4^3}$
$=5\times4$
$=20$
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