Which one is better? Please suggest me the book which helpsnin concept building .

@ suhaibks
if u want concept building and u have time , then go for pearson one , beacuse pearson contains theory as well as questions in explained manner. but in
a das gupta , u will not find that much detailed theory , for that reason its suggested to practice a das gupta after solving ncert throughly .
AND WHY DO U EXCLUDE M L KHANNA FROM THIS LIST? they are good comparison to pearson .
so, as far as concept building is concerned . u have this sequences
m l khanna > pearson publication > a das gupta.
ALL THE BEST.