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If k is a positive integer, which of the...

If k is a positive integer, which of the following represents the average of `3^(k) and 3^(k+2)`?

A

`(1)/(2)*3^(k+1)`

B

`5*3^(k)`

C

`6^((3)/(2)k)`

D

`(1)/(2)*3^(3k)`

Text Solution

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The correct Answer is:
B
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