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Product of Two Numbers = HCF x LCM

If the LCM of...

Question

If the LCM of two numbers 39 and 221 is 663, what is the HCF?

A

39

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B

7

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C

13

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D

66

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Solution

The correct option is C 13
$S i n c e p r o d u c t o f t w o n u m b e r s = L C M \times H C F$
$T h u s, 39 \times 221 = 663 \times H C F$
$H C F = 13$ .

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If the L.C.M of two numbers 39 and 221 is 663, then the H.C.F of the numbers would be 13.

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and their LCM is

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