- Treat the adjacent Black and White flags as a single block (BW or WB). - Identify the constraints on the placement of this block: not at ends, not adjacent to V or R. - Assume the 5 original flags (other than V and R) are identical, as this leads to one of the options. - Place the identical flags first to create slots, then place the V, R, and X block respecting the constraints.
In additions to the seven flags, if the Black flag and the White flag are also to be placed such that they are adjacent to each other but none of them is next to the Violet flag or to the Red flag, and also none of them is at any of the extreme ends, then what is the total number of possible arrangements ?
Asked in GPSC Prelims CSP 1 2017 · Topic: Basics of Computers and Information Technology (Computer Software: Types (System, Application), Programming Languages (Basic Concepts))
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