Which one of the following numbers can be removed from the set S = {0, 2, 4, 5, 9} without changing the average of the elements of the set S?
Solution
Correct Answer: Option D
The average of set S=(0+2+4+5+9)/5=20/5=4
Without changing the average of the elements of the set S we deduct 4 from 20
If one number removed from set S =(20-4)/4=16/4=4
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