Finding difficulty in solving problems of percentage of s n p character

This is for preparation in case someone needs Iit jam 2005-2018 full solution https://iitjamchemistrysolvedpapers.blogspot.com/

for this question how to find

Use this formula

Any problem in using this formula

Answer: s-character is the contribution of sigma type bond in a hybridization: sp3 = 25% s-character, 75% p-character sp2 = 33% s-character, 66% p-character sp = 50% s-character, 5...