The average of 13 numbers is 65. The average of first three numbers is – McqOptions

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1.	The average of 13 numbers is 65. The average of first three numbers is 63 and that of next 9 numbers is 64.5. The 11th number is 2 more than the 12th number but less than 13th the by 2.5. What is the average of 11th and 12th number?
A.	73.5
B.	72
C.	75.5
D.	75
Answer» C. 75.5

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