In an examination, there are three multiple-choice questions and each question has 4 choices. Number of ways in which a student can fail to get all answers correct is
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1 mark, −0.5MathematicsCombinatorics and countingInclusion-exclusion and complementary countingEasyabout 1 min
JNU SSS 2010 Question 36: Combinatorics and counting
Answer and worked solution
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Combinatorics and counting has come up 24 times in 5 exams since 2009.
What this question tests
This question is on Inclusion-exclusion and complementary counting, part of Combinatorics and counting in Mathematics.
Counting by adding and removing overlaps, or by counting what is not wanted.
TestStop has 7 past-paper questions on this subtopic.
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Question from the JNU SSS 2010 paper. Solutions are TestStop's own. Not affiliated with or endorsed by any examination authority.