Foundation November 2023 Paper 1 Q19
19
(a)
(i) Write down the value of \(\ 5^0\) (1)
(ii) Write down the value of \(\ 5^{-2}\) (1)
(b) Write \(\ \dfrac{2^5 \times 2^4}{2^3}\ \) in the form \(2^n\) where \(n\) is an integer. (2)
| Answer | Mark | Mark scheme |
|---|---|---|
| 1 | B1 | cao |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(\dfrac{1}{25}\) | B1 | oe |
| Answer | Mark | Mark scheme |
|---|---|---|
| \(2^6\) | M1 | for a correct first step using a rule of indices, eg \(2^{5+4}\ (= 2^9)\) or \(2^{5-3}\ (= 2^2)\) or \(2^{4-3}\ (= 2^1)\) or for \(2 \times 2 \times 2 \times 2 \times 2 \times 2\) or 64 |
| A1 | for \(2^6\) |
Additional guidance
Accept \(n = 6\)