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Sanjay Gulati from Bhilai

Mathematics Academy

mathematicsbhilai.blogspot.com
Sanjay Gulati, Bhilai







Susam Pal from Bangalore

cotpi puzzles

cotpi.com/p
Susam Pal, Bangalore


PiyushGoel from GrNoida

PiyushTheorem

piyushtheorem.wordpress.com
Piyushgoel, GrNoida



Saiyad Yoctel from Delhi

Dips Academy

dips-academy.blogspot.com
Saiyad Yoctel, Delhi