A map representing countries R, S, W, X, Y and Z is to be drawn. Adjacent countries cannot be of the same color on the map. The countries adjacent to each other are as follows: R, S, X and Y are each adjacent to W. X is adjacent to Y. R and S are each adjacent to Z. Which of the following is a pair of countries that cannot be same color as each other?
A. R and S
B. S and W
C. W and X
D. W and Y
E. None of these
Explanation: R, S, X, Y প্রত্যেকে W এর সংলগ্ন। X, Y এর সংলগ্ন। S ও W এর colour এক হতে পারবেনা। একইভাবে W, X এবং W, Y কোন pair এই একই colour হওয়া সম্ভব নয়। যেহেতু একাধিক সঠিক উত্তর সম্ভব, প্রশ্নটি ত্রুটিপূর্ণ হতে পারে। তবে S and W অপশনটি W এর সংলগ্ন হওয়ায় সঠিক।
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