If HCF of $(420, x) = 60$ and LCM of $(420, x) = 1260$ , then $x$ is

180

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300

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210

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250

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Solution

The correct option is D $180$
$L C M \times H C F =$ Product of numbers
$60 \times 1260 = 420 \times x$
$x = 180$
Therefore, $A$ is the correct answer.

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