Gujarat BoardEnglish MediumSTD 6MATHSPlaying With Numbers1 Mark
MCQ
Find two common multiples of $12,15$
A
$48, 96$
✓
$60, 120$
C
$10, 20$
D
$24, 30$
✓
Answer
Correct option: B.
$60, 120$
$12 = 2^2 \times 315 = 3 \times 5$
$\Rightarrow LCM = 2^2 \times 3 \times 5 = 60$
$\therefore 60$ is the least common multiple of $12,15.$ Thus,
all multiples of $60$ are common multiples of $12$ and $15.$
Answer $= 60,120$
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