The median of a set of 7 distinct observations is 15

The median of a set of 7 distinct observations is 15. If each of the largest 3 observations of the set is increased by 3, then the median of the resulting set is ………
(a) 12
(b) 15
(c) 18
(d) 20

Anurag Mishra Professor Asked on 25th May 2016 in Maths.
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    Answer: (b) 15 

    Anurag Mishra Professor Answered on 5th July 2016.
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