Which one of the following numbers can be remove from the set S = { 0, 2, 4, 5, 9} without changing the average of the elements of the set S ?
Created: 7 months ago | Updated: 1 month ago
Job Solution Bangladesh Bank Bangladesh Bank - Assistant Director - 2012 গণিত
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Average of five value: (0+2+4+5+9) / 5 = 20 / 5  = 4

something / 4 = 4
=> something = 16

now, check the sum of which values gives 16
and this are: 0+2+5+9   (Remember: only this four value gives: 16)
so, eliminated value = 4

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