Respuesta :

Answer:

3

Step-by-step explanation:

  • 447÷3=149
  • 577 is a prime number so it can't be divided
  • 669÷3=223
  • 447=3×149
  • 577=0
  • 669=3×223
  • Common factors=3
  • H.C.F of 447,577 and 669=3

Answer:

1

Step-by-step explanation:

447 = 3 ×149

577 = 577 (prime number)

669 = 3 × 223

HCF = 1