111) Find the HCF by prime factorisation
a) 28, 36
b) 105, 140, 175
C
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Answer:
answer of option (a)
Step-by-step explanation:
HCF of 28,36
28=2×2×7
36=2×2×3×3
2×2 is common so 2×2=4 is the HCF of 28,36
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