Question

find 5 geometric means between ⅓ and 243​

Answer 1

Answer:

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Step-by-step explanation:

81

Given that:

First term a=1/3 and 

Seventh term ar^6=243

1/3×r^6=243

r^6=243×3

r^6=36

So, common ratio is 3.

For this problem, we can use hit and trial  method as it's common ratio is 3 and in the given options, 81 is the only number that is in a multiple of 3. Hence, this is the correct option.