O-LevelMathematicsNumber4024/11 · Oct/Nov 2022 · Q113 Marks
11 (a) Write 120 as a product of its prime factors. (b) 315 = 3² × 5 × 7. Use this information to find the smallest integer value of n, such that 315n is a square number.
- (a)Write 120 as a product of its prime factors.[2]
- (b)315 = 3² × 5 × 7. Use this information to find the smallest integer value of n, such that 315n is a square number.[1]
Mark scheme
Marking points from the official mark scheme (Oct/Nov 2022). The mark or mark type is shown in brackets.
- [2] 2×2×2×3×5 or 2³×3×5
- B1 for full list of prime factors, not as product
- or M1 for any two stages correct in factor tree or ladder method
- [1] 35
Write your answer and get it marked
On Oracle Prep you can write or photograph your own answer and have it marked by AI against this mark scheme, with feedback on what you missed.
Sign up free →