Question
What is the highest common factor of 120 and
1800?Solution
ATQ,
Prime factors of 120 = 2 × 2 × 2 × 3 × 5
Prime factors of 1800 = 2 × 2 × 2 × 3 × 3 × 5 × 5
HCF = 2 × 2 × 2 × 3 × 5 = 120
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