Find the HCF of 72,126, and 90 using prime factorisations method
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Find the HCF of 72,126, and 90 using prime factorisations method
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Answer:
18
Step-by-step explanation:
72=2×2×2×3×3 = 2³×3²
126=2×3×3×7 = 2×3²×7
90=2×3×3×5 = 2×3²×5
Hence, HCF of 72, 126, 90 = 2×3² = 2×9 = 18