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Find the HCF and LCM of 144, 180 and 192...

Find the HCF and LCM of 144, 180 and 192 by prime factorisation method.

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Factor of `144=2X2X2X2X3X3`
Factor of `180=2X2X3X5`
Factors of `192=2X2X2X2X2X2X3`
Common factor of these`={2,2,3}`
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