At a conference Exactly seven speakers Samia. Tariq, Umana. quamrul. Ramisa.vikash, and wasiq are to speak. In the schedule for the conference.there are seven slots available for speakers, and the time slots are numbered consecutively 1 through Exactly one speaker must be assigned to each time slot according to the following  condition:   *Quamrul must speak immediately before or immediately after Tang speaks. *Tariq must speak sometime before Ramisa speaks. *Samia must speak in either time slot 1 or time slot *Vikash must speak in lime slot If Wasiq speaks in time slot 7, any of the following pairs of speakers could speak in time slots immediately adjacent to each other  except?

A    Ramisa and Umana

B    Quamrul and Ramisa

C    Samia and Tariq

D    Samia and Quamrul

Solution

Correct Answer: Option B

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