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bapefer498
22.08.2020 •
Mathematics
A certain list consists of 3 different numbers. Does the median of the 3 numbers equal the average (arithmetic mean) of the 3 numbers
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Ответ:
Yes
Step-by-step explanation:
Let the numbers be p q r such that p>q>r
So p + q + r = 3q
2q = p+ r
And q< p but q> c,
So by Solving this would give
q= (p+ r)/2
so q is the mean of p & r.
Since the only other number that fits is q,
Then q is the mean of the numbers p,q,r
As so q is also the median of this set
Thus proving that the mean is the same as the median.
Ответ: