Question

The HCF of 513,1134 and 1215 is:

• A. 27
• B. 19
• C. 45
• D. 43

Answer 1

Answer:

A. 27

Find the HCF step by step:

Prime factorization:
513 = 3³ × 19
1134 = 2 × 3⁴ × 7
1215 = 3⁵ × 5

Common factor in all three $= (3^3)$

$\text{HCF} = 3^3 = 27$

Answer: 27