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In substitution type of questions, some particular objects are assigned code names. Then a question is asked that is to be answered in the code language.

If green means red, red means yellow, yellow means blue, blue means orange and orange means green, what is the colour of clean sky ?

Option:
A. Blue
B. Red
C. Yellow
D. Green
E. Orange
Answer: C . Yellow

Justification:

The colour of clean sky is 'blue' and as givne, 'yellow' means 'blue'.
so, the colour of clear sky is 'yellow'.

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