O-LevelAdditional MathematicsPermutations and combinationsMay/June 2021Paper 1 Q78 Marks
A six-character password is to be made from the following eight characters. Digits: 1, 3, 5, 8, 9 Symbols: *, $, # No character may be used more than once in a password. Find the number of different passwords that can be chosen if
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The correct answer is —. This question tests the candidate's understanding of permutations and combinations within the Additional Mathematicssyllabus. The examiner's mark scheme requires...
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Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
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