KBC 2021: Which of these colours does not appear on the Olympic rings? 

a. Blue 

b. Yellow 

c. Black 

d. Orange 

Answer: d. Orange 

The Olympic symbol consists of five interlaced rings of equal dimensions (the Olympic rings), used alone, in one or in five different colours. When used in its five-colour version, these colours shall be, from left to right, blue, yellow, black, green and red. The rings are interlaced from left to right; the blue, black and red rings are situated at the top, the yellow and green rings at the bottom in accordance with the following graphic reproduction. 

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