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Question

12−n,12,12+n
What is the average (arithmetic mean) of the 3 quantities in the list above?

A
4
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B
12
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C
18
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D
4+n3
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E
12+n3
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Solution

The correct option is E 12
Given 3 Quantities: 12 n, 12, 12 + n

Average of the above 3 Quantities = Sum of the above3QuantitiesNumber of Quantities

= 12 n + 12 + 12 + n3

= 12×33


= 12


Therefore, average of the Quantities listed above is 12.

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