Foundation June 2019 Paper 2R Q23
23
\(A = 3^2 \times 5^4 \times 7 \qquad\qquad B = 3^4 \times 5^3 \times 7 \times 11\)
(a) Find the highest common factor (HCF) of \(A\) and \(B\). (2)
(b) Find the lowest common multiple (LCM) of \(A\) and \(B\). (2)
| Scheme | Marks |
|---|---|
| M1 | |
| 7875 | A1 |
| (2) |
Notes
M1: \(3^2 \times 5^3 \times 7\) oe or correct Venn diagram
| Scheme | Marks |
|---|---|
| M1 | |
| 3 898 125 | A1 |
| (2) | |
| (4 marks) |
Notes
M1: \(3^4 \times 5^4 \times 7 \times 11\) oe or correct Venn diagram