HCF of 12, 18 and 30 is _____?
- 180
- 12
- 6
- None of these
Explanation
To find the Highest Common Factor (HCF) of 12, 18, and 30, we follow these steps:
Find the prime factors:
12 = 2 × 2 × 3
18 = 2 × 3 × 3
30 = 2 × 3 × 5
Identify common factors:
Common prime factors: 2 and 3
Multiply them: 2 × 3 = 6
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