Give the full explanation of how to find the HCF of 180,144,192 by prime factorisation
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Answer:180 = 2 × 2 × 3 × 3 × 5
144 = 2 × 2 × 2 × 2 × 3 × 3
192 = 2 × 2 × 2 × 2 × 2 × 2 × 3
HCF = 2 × 2 × 3 = 12
LCM = 2^8 × 3^3 × 5
= 264 × 27 × 5
= 35640
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