Multiple choice What is the HCF of 1470 and 220? 8 9 10 11 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Factors of 1470 = 2 × 5 × 7 × 3 × 7 Factors of 220 = 2 × 2 × 5 × 11 HCF of 1470 and 220 = 10