$\"\"$

The value of $\"\"$ is $\"\"$ .

Stirling $\"\"$ s Formula : $\"\"$ .

Here $\"\"$

$\"\"$

Thus, The value of $\"\"$ using Stirling $\"\"$ s formula is $\"\"$ .

$\"\"$

The value of $\"\"$ is $\"\"$ .

The value of $\"\"$ using Stirling $\"\"$ s formula is $\"\"$ .