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UPSC Civil ServicesPrelims2023General Studies Paper II (CSAT)
Question
QQ66. A flag has to be designed with 4 horizontal stripes using some or all of the colours red, green and yellow. What is the number of different ways in which this can be done so that no two adjacent stripes have the same colour ?
Options
- A 12
- B 18
- C 24
- D 36
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Correct Answer
C 24
Model Answer
Answer: option C, as per UPSC's final answer key (Series A).