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Question
 average of a,b and c is 11, average of c,d and e is 17 average of e and f is 22 and the average of e and c is 17 . find out the average of a, b, c, d, e and f.
Options:
A .  13 2⁄3
B .  15 2⁄3
C .  18 2⁄3
D .  19 2⁄3
Answer: Option B
Explanation :

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