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      Question

      Who worked with Yahoo?

      Study the following information carefully and answer the questions given below.   Seven persons –John, Peter, Ruby, Sam, Katy, Sarah, and Joseph live on seven different floors of a building but not necessarily in the same order. Lowermost floor is numbered 1. Each of them worked indifferent offices – Apple, Sony, Starbucks, eBay, PayPal, Yahoo, and Google but not necessarily in the same order. Each worked in different days of the week from Monday to Sunday. 1) Peter lives on an odd numbered floor but not on floor number three and worked on Monday. 2) The one who worked in Starbucks lives immediately above Joseph who worked on one of the days after Thursday. 3) The one who worked in Google lives on an odd numbered floor above Sarah who worked on Wednesday. 4) Katy worked in Apple and lives on 4th floor. 5) John lives on the floor above Katy and worked for PayPal and worked on Saturday. 6) The one who lives on top floor worked in eBay and the person living on the bottom floor worked in Yahoo and neither of them worked on Monday. 7) Ruby lives on an even numbered floor and went to office two days after the person who worked for Sony went. 8) Sam worked on Tuesday.
      A Sam Correct Answer Incorrect Answer
      B Joseph Correct Answer Incorrect Answer
      C Peter Correct Answer Incorrect Answer
      D Sarah Correct Answer Incorrect Answer
      E None of these Correct Answer Incorrect Answer

      Solution

      From 1), Peter lives at floor no 1 or 5 or 7. From 4), Katy is on 4th floor and he worked for Apple. Now from 5), John lives at floor no. 5 or 6 or 7. Since From 6), it is clear that person who lives in floor  7  worked for eBay and person who lives in floor no 1 worked for Yahoo but not in Monday. So it  is clear that Peter lives at floor no. 5 and John lives at floor no. 6. From 7), Ruby lives at even no. floor. Therefore, the only place left for Ruby is floor no. 2. Hence, Ruby lives at floor no. 2. From 2), one who worked for Starbucks lives immediately above Joseph so that two consecutive floors are floor no. 1 and 2. Therefore, Joseph lives at floor 1 and Ruby worked for Starbucks. Since From 3), one who worked for Google lives on odd number floor above Sarah. So, the only places for Sarah are floor 3. And therefore the only place left for Sam is floor 7 and also from 3), Peter who lives at floor 5 worked for Google. The only Office left for Sarah is Sony, Sarah worked for Sony. From 2), Joseph worked for Yahoo after the day of Thursday that are either Friday or Sunday. But, according to 7), Ruby left 2 days after the one who worked for Sony left. Sarah worked for Sony in Wednesday. Thus Ruby worked on Friday. Katy worked on Thursday.

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