Yes400Plus

If you are an aspirant for Civil Services, and optional is Mathematics, congratulations.
This YouTube channel 'Yes400Plus' of mine is exclusive in taking you through 400+ in Mathematics in Civil Services (Mains). The strategy is to equip you with the basics and techniques of solving Mathematics problems in Civil Services (Mains).
Owner of www.mathsacad99.com, and YouTube Channel (Maths Academy 99) for elementary quantitative aptitude for various exams: https://www.youtube.com/channel/UCpjK3mL6LnNxYyWKJ-tnZhg/videos
.
Sanjay Mohan Bhatnagar, Ex-Unacademy Educator (MPPSC and VYAPAM) for Mathematics, Science & Technology and various other subject including Polity.
M.Sc. (Maths), LLB (Delhi University), Certificate Course in Urdu (JNU), PG Diploma in Cyber Law (Topper) from NLIU Bhopal. Well versed in programming with Java, VB6, VBA. Expertise: eGovernance related issues
Author of two books (हिन्‍दी माध्‍यम) 
रसायन विज्ञान: (https://amzn.to/3eC52OX), जीव विज्ञान: (https://amzn.to/2ZssIOX)