1mark 2018 Catholic High P6 Paper1 SA1 P6 / Catholic High / 2018 / SA1 / Paper 1 – Q18 [1 mark] Question: Write down all the common factors of 12 and 16. Solution: Similar Posts P6 / ACS / 2019 / CA1 – Q18 [3 marks] P6 / Raffles Girls / 2020 / SA2 Prelims / Paper 2 – Q12 [3 marks]