Question

The mean.
of five observations is 15. If the mean of the first
three observations is 14 and that that of the last three is
17, find the third observation.​

Answer 1

Answer:

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Step-by-step explanation:

THE MEAN OF FIRAT 3 OBSERVATIONS IS 14

SO X /3 = 14

X=42

AND MEAN OF LAST THREE OBSERVATION

Y/3=17

Y=51

SO THE THIRD TERM IS 51 - 42 = 9

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