Thank you for reporting, we will resolve it shortly
Q.
The number of 4$^\circ$ carbon atoms in 2, 2, 4, 4-tetramethylpentane :
Organic Chemistry – Some Basic Principles and Techniques
Solution:
$4^\circ$ carbon is the carbon attached to 4 carbon atoms. It can be seen in the image that there are only 2 carbon atoms which are attached to 4 carbon atoms.