csat-suneung 2008 Q9

csat-suneung · South-Korea · csat__math-humanities 3 marks Permutations & Arrangements Selection and Task Assignment
A music concert is divided into Part 1 and Part 2, with 2 solo teams, 2 ensemble teams, and 3 choir teams performing in total. The performance order of the 7 teams is to be determined according to the following two conditions.
(A) In Part 1, 3 teams perform in the order: solo, ensemble, choir.
(B) In Part 2, 4 teams perform in the order: solo, ensemble, choir, choir. What is the number of ways to determine the performance order for this music concert? [3 points]
(1) 18
(2) 20
(3) 22
(4) 24
(5) 26
A music concert is divided into Part 1 and Part 2, with 2 solo teams, 2 ensemble teams, and 3 choir teams performing in total. The performance order of the 7 teams is to be determined according to the following two conditions.\\
(A) In Part 1, 3 teams perform in the order: solo, ensemble, choir.\\
(B) In Part 2, 4 teams perform in the order: solo, ensemble, choir, choir.\\
What is the number of ways to determine the performance order for this music concert? [3 points]\\
(1) 18\\
(2) 20\\
(3) 22\\
(4) 24\\
(5) 26