り17/L mean «r 13.cbservutisns is ly tif.thea of firstt observations – InterviewSolution

1.	り17/L mean «r 13.cbservutisns is ly tif.thea of firstt observations s 12 and thatct last tien et sex varionsshservarien isis16, tanTH212 ) 13)1y)15
Answer» mean of 13 elements is 14so addition of 13 elements =1413=182mean of first 7 elements is 12so addition of first 7 elements =127=84mean of last 7 elements is 16so addition of last 7 elements =16*7=112now if we add first and last 7 elements 7th element is repeatedso by subtracting addition of 13 elements from first and last 7 elements addition we will get 7th elememt84+112-182=14

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