May/June 2026 Paper 21

2026 · 12 questions · 20 parts · 75 marks

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Finish set
Q1
1
–/1 mk
Q2
2
–/4 mks
Q3
3
–/3 mks
Q4
4
–/4 mks
Q5
5(a)5(b)5(c)5(d)
–/12 mks
Q6
6
–/4 mks
Q7
7
–/4 mks
Q8
8(a)8(b)
–/7 mks
Q9
9(a)(i)9(a)(ii)9(b)9(c)
–/7 mks
Q10
10(a)10(b)
–/9 mks
Q11
11
–/5 mks
Q12
12
–/15 mks
Context for question 8
Consider the logic circuit:
logic circuit with inputs A, B and C: A and B feed an XOR gate, C is inverted by a NOT gate and combined with B in an AND gate, and the two results feed an OR gate giving output X
8(a)Logic Gates Truth TablesMedium3 marks
Write the logic expression for the given logic circuit.
8(b)Logic Gates Truth TablesMedium4 marks
Complete the truth table for the given logic circuit.
ABCX
000
001
010
011
100
101
110
111