1. The problem is to verify if the given Highest Common Factors (HCF) for pairs of numbers are correct. 2. The HCF of two numbers is the greatest number that divides both numbers exactly without leaving a remainder. 3. For 32 and 26: - Factors of 32: 1, 2, 4, 8, 16, 32 - Factors of 26: 1, 2, 13, 26 - Common factors: 1, 2 - Greatest common factor: 2 - So, HCF(32, 26) = 2, which is correct. 4. For 49 and 35: - Factors of 49: 1, 7, 49 - Factors of 35: 1, 5, 7, 35 - Common factors: 1, 7 - Greatest common factor: 7 - So, HCF(49, 35) = 7, which is correct. 5. For 55 and 20: - Factors of 55: 1, 5, 11, 55 - Factors of 20: 1, 2, 4, 5, 10, 20 - Common factors: 1, 5 - Greatest common factor: 5 - So, HCF(55, 20) = 5, which is correct. Final conclusion: All given HCF values are correct.