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B
4
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C
3
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D
2
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Solution
The correct option is A 1 Euclid's division algorithm to find HCF of 5 and 7:
Step1: 7 = 5×1+2
Step2: 5 = 2×2+1
Step3: 2 = 1×2+0
Hence 1 is the HCF of 5 and 7.