Question : The LCM of $x$ and $y$ is 441 and their HCF is 7. If $x$ = 49 then find $y$.
Option 1: 56
Option 2: 36
Option 3: 65
Option 4: 63
Correct Answer: 63
Solution : Given: LCM of $x$ and $y$ = 441, HCF = 7 and $x$ = 49 Now, LCM × HCF = $x$ × $y$ ⇒ 441 × 7 = 49 × $y$ $\therefore y$ = $\frac{441}{7}$ = 63 Hence, the correct answer is 63.
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