The series $\"\"$

\

The formula for finding nth terms is $\"\"$

\

Formula for sumof nth term is $\"\"$

\

Substitute $\"\"$

\

$\"\"$

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25)

\

The geometric sequence $\"\"$

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The formula for finding nth terms is $\"\"$

\

Find common ratio.

\

$\"\"$

\

Find next three terms.

\

Substitute $\"\"$

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$\"\"$

\

The next three terms are $\"\"$

\

26)

\

The geometric sequence $\"\"$

\

The formula for finding nth terms is $\"\"$

\

Find common ratio.

\

$\"\"$

\

Find next three terms.

\

Substitute $\"\"$

\

$\"\"$

\

The next three terms are $\"\"$

\

27)

\

Three geometric means between $\"\"$

\

Find the three geometric sequence.

\

Consider $\"\"$

\

Here, $\"\"$

\

The formula for finding nth terms is $\"\"$

\

Find common ratio.

\

Substitute $\"\"$

\

$\"\"$

\

Find three geometric terms.

\

Substitute $\"\"$

\

$\"\"$

\

Three geometric terms are $\"\"$