Hcf by prime factorisation mathod 520 and 1420
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20
Step-by-step explanation:
1420÷2=710÷2=355÷5=71÷71=1 so now 520 turn 520÷2=260÷2=130÷2=65÷5=13÷13=1 so now 520 = 2x2x2x5x13 1420= 2x2x5x71 now we who is same = 2x2x5 = 20 hope my answer will be helpful for you
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