2023 AQA AS COMPUTER SCIENCE 7516/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED]

2023 AQA AS COMPUTER SCIENCE 7516/2 Paper 2 Question Paper & Mark scheme (Merged) June 2023 [VERIFIED] Please write clearly in block capitals. Centre number Candidate number Surname Forename(s) Candidate signature I declare this is my own work. AS COMPUTER SCIENCE Paper 2 Monday 22 May 2023 Afternoon Time allowed: 1 hour 30 minutes Materials For this paper you must have: • a calculator. Instructions • Use black ink or black ball-point pen. • Fill in the boxes at the top of this page. • Answer all questions. • You must answer the questions in the spaces provided. Do not write outside the box around each page or on blank pages. • If you need extra space for your answer(s), use the lined pages at the end of this book. Write the question number against your answer(s). • Do all rough work in this book. Cross through any work you do not want to be marked. Information • The marks for questions are shown in brackets. • The maximum mark for this paper is 75. Advice • In some questions you are required to indicate your answer by completely shading a lozenge alongside the appropriate answer as shown. • If you want to change your answer you must cross out your original answer as shown. • If you wish to return to an answer previously crossed out, ring the answer you now wish to select as shown. For Examiner’s Use Question Mark 1 2 3 4 5 6 7 8 9 10 11 12 13 14 TOTAL 2 Answer all questions in the spaces provided. 0 1 . 1 Shade in one lozenge to indicate which of the following values is an irrational number. [1 mark] A 3 B √42 C 73 D –19 0 1 . 2 Shade in one lozenge to indicate which of the following values is a natural number. Do not write outside the box A [1 mark] 3 4 B √2 C 73 D –19 0 1 . 3Define the set of real numbers. [1 mark] *02* IB/G/Jun23/7516/2 3 0 1 . 4 Shade in one lozenge to indicate which of the following symbols represents the set of numbers most suitable for counting the number of people in a room. [1 mark] ℕ BC ℚ A Do not write outside the box D ℝ 0 1 . 5 What is meant by the term ordinal numbe