Ziyang Sim's answer to Jack Taylor's Junior College 1 H1 Maths Singapore question.

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Ziyang Sim
Ziyang Sim's answer
9 answers (Tutor Details)
1st
(b) Choose One from each region
(c) Since you can only choose 2 region out of the 4, you'll only have 4 people remaining thus the 4C4
J
J
4 years ago
The 4C4 is not necessary/ is optional.

Having 4 people left for 4 slots/vacancies/positions means the selection is already done.