Higher June 2025 Paper 4 Q10
10 Find the value of \(k\).
\[\frac{25 \times (5^3)^k}{5^4} = 5^{19}\][3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 7 | 3 | M2 for \(3k + 2 - 4 = 19\) oe or \(5^{21}\) | e.g. \(3k + 2 = 23\) |
| or M1 for \(5^2\) or \(5^{3k}\) or \(5^{-2}\) or \(5^{23}\) or forming equation in \(k\) with one error or omission e.g. \(3k - 4 = 19\) | condone \(5^{3 \times k}\) for M1 | ||