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If Q is assigned on exactly four days of the week, which of the following could be the pair of watchmen assigned on Wednesday?

A. P and R

B. Q and S

C. Q and R

D. Q and T

E. None of these

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Explanation: Wednesday তে S কে থাকতে হবে।

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If Q is assigned on exactly four days of the week, which of the following could be the pair of watchmen assigned on Wednesday?