Higher June 2025 Paper 1 Q13
13 \(c\) and \(d\) are consecutive cube numbers, where \(\quad c \lt 4.5^3 \lt d\)
Work out the value of \(\quad d - c\) [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| 61 | B2 | B1 \((c =)\ 4^3\) oe or \((c =)\ 64\) and \((d =)\ 5^3\) oe or \((d =)\ 125\) or their answer comes from \(x^3 - (x - 1)^3\) correctly calculated, where \(x\) is an integer \(\ne 5\) eg answer 91 from \(216 - 125\) SC1 \(-61\) |
Additional guidance
SC1 is for \(c - d\)
Do not allow 64 or 125 seen in a list if not identified or used