Q. The HCF of two numbers is 15 and their LCM is 225. If one of the number is 75, then the other number is :
Answer: 45
Notes: ∵ First Number $latex \times$ Second Number = HCF $latex \times$ LCM => 75 $latex \times$ Second Number = 15 $latex \times$ 225 Second Number $latex = \frac{15\times 225}{75} = 45&s=1$ Hence option [A] is correct answer.

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