Cambridge IGCSE and O Level Computer ScienceAnswers to Student's BookExam-style questions and sample answers have been written by the authors.References toassessment and/or assessment preparation are the publisher's interpretation ofthe syllabusrequirements and may not fully reflect the approach of Cambridge Assessment InternationalEducation.Cambridge International recommends that teachers consider using a range of teachingand learning resources in preparing learners for assessment,based on their own professionaljudgement of their students'needs.Cambridge Assessment International Education bears no responsibility for the example answers toquestions taken from its past question papers which are contained in this publication.The questions,example answers,marks awarded and/or comments that appear in this digitalmaterial were written by the author(s).In examination,the way marks would be awarded toanswers like these may be different.1 Data representationAnswers to activities1.1a51b12715311625515143h179i112j238k48711364m3855n199202047p31984q161414998334952t32767Cambridge IGCSE and O Level Computer Science Teacher's Guide1David Watson and Helen Williams 2021Answers to Student's Book1.2a00101001b01000011c01010110d01100100e0110111110010000i11001000jk100000001110100010000001101111000m0000111111111111n0100000000010000o11110011011000111.3a C3b F7c 27Fd 4EEf 89Eg (0)4FEh (0)E9Ci FF7Dj67AE1.4a01101100b01011001c10101010101000000000e010000001110f101110100110g100111001100h0100000010101010i1101101001000111i0001101010110000Cambridge IGCSE and O Level Computer Science Teacher's Guide2David Watson and Helen Williams 2021Answers to Student's Book1.5107b15674255f2561g2996h3240i4782444251.6a62b E3c IEAd IFFe33Af 3E8A4Ah E9Fi FA7j13881.71 Student investigation2a35,37,8Bb C9,7A,CCcC,6F,511.8a10000011b01100110d10110110e01101111f01111110h01110000i11111110Cambridge IGCSE and O Level Computer Science Teacher's Guide3David Watson and Helen Williams 2021