Question

Find the HCF of the following numbers using prime factorization.
1. 225,300,375
2. 42,63,105
3. 112,140,168

Answer 1

Answer:

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Answer 2

Answer:

1)225=5×5×3×3

300=2×2×3×5×5

375=3×5×5×5

HCF of (225,300,375)=5²×3=25×3=75

2)42=2×3×7

63=7×3×3

105=3×5×7

HCF of (42,63,105)=7×3=21

3)112=2×2×2×2×7

140=2×2×5×7

168=2×2×2×3×7

HCF of (112,140,168)=2²×7=4×7=28

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