Unit 2 · Schedule and Timetable Matching
Chromatica Festivals — Which Colour Was It?
Lesson 7 of 12
About this lesson
Shiro sees everyone in Chromatica wearing the same colour. He checks the festival colour table — and is still not sure which festival it is. That "still not sure" detail is the whole key to the question. This puzzle teaches one of the most useful table-reading skills: recognising that ambiguity means the value must appear more than once in the data.
Chapters
Question
The Kingdom of Chromatica has five traditional festivals which are held every year. During these festivals, all the citizens of Chromatica wear the same colour. The colours are shown in this table:
| Festival | Colour |
|---|---|
| Chromatican Independence Day | Red |
| The King's Official Birthday | Yellow |
| Women's Day | Blue |
| The Ice Carnival | Blue |
| Chromatican New Year | Red |
Shiro is visiting Chromatica and sees that everyone is wearing the same colour, so he knows they are celebrating a festival, but he doesn't know which one. Even after checking the table above, he's still not sure.
What can we say about the colour that Shiro saw everyone wearing?
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