upteto17 q123
- Option : B
- Explanation : (B) We know that
LCM(a,b) × HCF(a,b) = a × b
Let other number is x.
Then, according to the question,
1989 × 13 = 117 × x
⇒ x = (1989 × 13)/117 ⇒ x = 221
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