find the hcf of 84 90 and 120
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Answer:
2520
Step-by-step explanation:
84 = 22 × 3 × 7 90 = 2 × 32 × and 120 = 23 × 3 × 5. HCF = 21 × 31 = 6. LCM = 23 × 33 × 51 × 71= 8 × 9 × 5 × 7 = 2520.
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