Find the HCF of 140 and 60 and 80 by using prime factorization method.
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Answer:
20 is HCF.......
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140. 60. 80
2/70. 2/30. 2/40
2/35. 2/15. 2/20
5/7 3/5. 2/10
2/5
HCF = 140= 2×2×5×7
60=2×2×3×5
80= 2×2×2×2×5
HCF= 2×2×5= 20
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