The average of 20 magnitudes is 18, of which the average of the first – McqOptions

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1.	The average of 20 magnitudes is 18, of which the average of the first 9 is 14, that of the last 9 is 17. The average of the middle two results will be-
A.	50.5
B.	45
C.	51.5
D.	40.5
Answer» E.

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