A five-storeyed building with floors from I to V is painted using four different colours and only one colour is used to paint a floor.
Consider the following statements:
1. The middle three floors are painted in different colours.
2. The second and the fourth floors are painted in different colours.
3. The first and the fifth floors are painted red.
Which of the following statements are sufficient to ensure that any two consecutive floors have different colours?
Негізгі бет 2019_Qn A29, A five-storeyed building with floors from I to V is painted using four different.......
No video
Пікірлер: 9