DILR0021: Linear Arrangement | Solved by Ajay Zener

DILR0020: Linear Arrangement | Solved by Ajay Zener
Eight GradSquare students Javed, Tony, Andy, Dinesh, Chris, Root, Peter and Mathew are sitting in a straight line maintaining social distancing from each other (but not necessarily in the same order). Some of them are facing south while some are facing north.
• Javed faces north and only two people sit to the right of Javed.
• Tony sits third to the left of Javed and only one person sits between Tony and Root.
• Root sits to the immediate right of Chris and only one person sits between Chris and Mathew.
• Both the immediate neighbors of Tony face the same direction and Tony faces the opposite direction as Javed.
• Both Peter and Andy face the opposite direction of Mathew and Andy sits third to the left of Root.
• Peter does not sit at any of the ends, while Dinesh faces the same direction as of Chris.
1. How many GradSquare students in the given arrangement are facing North?
a) More than four
b) Four
c) One
d) Three
e) Two
2. Four of the following five are alike in a certain way, and so form a group. Which of the following does not belong to the group?
a) Chris, Root
b) Mathew, Peter
c) Tony, Javed
d) Tony, Peter
e) Dinesh, Andy
3. What is the position of Root with respect to Mathew?
a) Second to the left
b) Third to the right
c) Third to the left
d) Fifth to the right
e) Second to the right
4. Who amongst the following sits exactly between Mathew and Chris?
a) Tony
b) Peter
c) Root
d) Chris
e) Andy
5. Who is sitting 2nd to the right of Tony?
a) Mathew
b) Dinesh
c) Root
d) Chris
e) None of the above
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