QN's answer to QN's Junior College 1 H1 Maths Singapore question.
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a(iii)
Date Posted:
4 years ago
I got the same answer if I add permutation... See my new attached photo... Maybe you verify with your teacher...
You don't have to list all possible combination, just do the permutation formula: 5!/(2!3!)= 10
It should be an error with the answer sheet, thanks for clarifying
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