Question

the mean of five numbers is 27 . if one number is excluded, their mean is 25 . find the excluded observation
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Answer 1

Answer:

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Answer 2

Answer:

35

Step-by-step explanation:

(x1=x2+x3+x4+x5)/5  =  27

x1=x2+x3+x4 = (27*5) - x5  => 135 - x5

(x1=x2+x3+x4)/4 = 25

(135 - x5) / 4 = 25

135 - x5 = 100

x5 = 35