alleryStart learning →The LCM of 12 and 18 is
A72
B6
C216
D36
Answer & Solution
Correct answer: D. 36
1. $12 = 2^2 \times 3$, $18 = 2 \times 3^2$.
2. LCM = product of the highest powers of all primes = $2^2 \times 3^2 = 36$.
3. Check: HCF × LCM = 6 × 36 = 216 = 12 × 18 ✓.
_Source: Karnataka SSLC (KSEEB) Class 10 Mathematics, Ch8 'Real Numbers', §8.3_
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