Question

Find the HCF by prime factorisation method of 144,576,804

Answer 1

Answer:

HCF of 144,576,804 = 24

Answer 2

3. Find the HCF by prime factorisation method :

(i) 138, 375 (ii) 170, 405

(iii) 144, 576, 804 (iv) 15, 90, 105

2 | 144

2 |72

2 |36

2 |18

3 |9

3 |3

|1

2 |576

2 288

2 144

2 72

2 36

2 18

3 9

3 3

1

2 804

2 402

3 201

67 67

1

144=2×2×2×2×3×3

576=2×2×2×2×2×2×3×3

804=2×2×3×67

HCF = 2×2×3

= 12