PERMUTATION QUESTION ASKED IN DSE

[saumya singha]

5 MEN AND 5 WOMEN ARE SEATED RANDOMLY IN A ROW OF CHAIRS.THE EXPECTED NUMBER OF WOMEN SITTING NEXT TO ATLEAST ONE MAN IS?

a-11/3
b-13/3
c-35/9
d-37/9

CAN someone pleaseeeeeee solve this?

[Pankaj]

http://discussion-forum.2150183.n2.nabble.com/Dse-question-Amit-sir-plz-solve-td7593772.html

[saumya singha]

thankyou sooo much Pankaj for this quick reply.
Is there a consolidated solution for the whole paper of 2014 somewhere?