MCQ
The least positive integer divisible by $20$ and $24$ is :
- ✓$120$
- B$480$
- C$360$
- D$240$
✓
Answer
Correct option: A.
$120$
Least positive integer divisible by $20$ and $24$ is
$\text{LCM}$ of $(20,24)$.
$20=2^2 \times 5$
$24=2^3 \times 3$
$\therefore \operatorname{LCM}\ (20,24)=2^3 \times 3 \times 5=120$
Thus $120$ is divisible by $20$ and $24$.
$\text{LCM}$ of $(20,24)$.
$20=2^2 \times 5$
$24=2^3 \times 3$
$\therefore \operatorname{LCM}\ (20,24)=2^3 \times 3 \times 5=120$
Thus $120$ is divisible by $20$ and $24$.
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