Civil Engineering
2023 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CE 2023 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 4–6 of 65. Imported answers require review unless explicitly marked reviewed.
Question 4
Open questionGAMCQ1 markNeeds review
A duck named Donald Duck says “All ducks always lie.”
Based only on the information above, which one of the following statements can be logically inferred with certainty?
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Open questionGAMCQ1 markNeeds review
A line of symmetry is defined as a line that divides a figure into two parts in a way such that each part is a mirror image of the other part about that line.
The figure below consists of 20 unit squares arranged as shown. In addition to the given black squares, up to 5 more may be coloured black. Which one among the following options depicts the minimum number of boxes that must be coloured black to achieve two lines of symmetry? (The figure is representative)

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Open questionGAMCQ2 marksNeeds review
Based only on the truth of the statement ‘Some humans are intelligent’, which one of the following options can be logically inferred with certainty?
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