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Q.
The average of six numbers is x and the average of three of these is y. If the average of the remaining three is z, then :
A.
x = y + z
B.
2x = y + z
C.
3x = 2y - 2z
D.
none of these
View Answer
Correct choice: B
Explanation:
Clearly, we have : x = (3y + 3z ) / 6 or 2x = y + z.
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