2022 HCI J2 MYE P2 Q9
Timothy Gan
2022 HCI J2 MYE P2 Q9
A class committee consisting of $9$ students is to be chosen from a class of $15$ girls and $10$ boys. Find the number of ways in which the committee can be chosen if Boy $B$ or Girl $G$ is selected but not both.
[2]
It was decided that Boy $B$ and Girl $G$ will be in the committee with $4$ particular girls and $3$ particular boys. During a meeting, the committee and their Civics Tutor sat at a round table with $~5$ identical wooden chairs and $~5$ identical metal chairs arranged alternatingly. Find the number of possible arrangements if all $4$ boys were seated separately from one another and Boy $B$ and Girl $G$ cannot be seated next to each other
[3]
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