พอดีได้โจทย์การจัดหมู่มาอ่ะค่ะ ไม่เข้าใจนิดหน่อย แต่งงมากๆ เป็นภาษาไทยก็แย่แล้ว นี่ดันเป็นภาษาอังกฤษด้วย สอนวิธีคิดให้หน่อยนะคะ ถือว่าสงสารเด็กตาดำๆ
1.1 The 9 passenger carriages are to be painted with advertisements. Two of the carriages will have an identical advert for McDonalds, three will have an identical advert for Kaplan International and the remainder will have identical adverts for The City of Birmingham Symphony Orchestra. Calculate the number of different possible arrangements of these carriages.
1.2 It is decided that the two McDonalds adverts must be combined into one large advert carriages which must cover two adjacent carriages. Taking this into consideration, how many possible arrangements are there now?
ช่วยหน่อยค่าาา งงไปหมดเเล้ว (การจัดหมู่ คณิตศาสตร์)
1.1 The 9 passenger carriages are to be painted with advertisements. Two of the carriages will have an identical advert for McDonalds, three will have an identical advert for Kaplan International and the remainder will have identical adverts for The City of Birmingham Symphony Orchestra. Calculate the number of different possible arrangements of these carriages.
1.2 It is decided that the two McDonalds adverts must be combined into one large advert carriages which must cover two adjacent carriages. Taking this into consideration, how many possible arrangements are there now?