Answers

2014-11-08T11:58:10+05:30
Let the floor u got in be x
x-7=10
therefore x=17
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2014-11-08T12:03:27+05:30


let your floor be= x

then after going down 7 floors your floor would be= x-7

now it says you exit on floor=10

hence, x-7=10

or x = 10+7

=17

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