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Gate G needed in a logic circuit to get a given truth table

This type of question, asked 4 times: 16 May 2023 S2, 9 May 2024 S1, 10 May 2024 S1, 17 Apr 2026 S1. All 4 questions below, oldest first.

Try each one first, then open its answer.

  1. Question 1

    16 May 2023 S2

    15
    To get the truth table shown from the following logic circuit, the logic gate GG should be

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  2. Question 2

    9 May 2024 S1

    17
    To get the truth table shown, from the following logic circuit, the Gate G should be
    bBY
    000
    010
    101
    111

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  3. Question 3

    10 May 2024 S1

    17
    To obtain the truth table shown, from the following logic circuit, the gate G should be
    ABY
    001
    010
    101
    111

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  4. Question 4

    17 Apr 2026 S1

    148
    To get the truth table shown from the following logic circuit, the gate G should be
    ABY
    000
    010
    101
    111

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