Question 3
Fractions, Decimals and ApproximationThe prime factors of 2520 are
- A.2, 9, 5
- B.2, 9, 7
- C.2, 3, 5, 7
- D.2, 3, 7, 9
Show the answer and explanation
Answer: C (2, 3, 5, 7)
Explanation
2520 = 2³ × 3² × 5 × 7, so its prime factors are 2, 3, 5 and 7 (9 is not prime).