group link-English group:-https://www.facebook.com/groups/1876190125957852/
FB GROUP-mathematics questions:-
“https://www.facebook.com/groups/1315709551848172/”

for chapterwise videos go through the playlist:

Time and work: “https://www.youtube.com/playlist?list=PLesyu_gd_4TEaZbkTCesT8rjlhkfCfcqT”

LCM & HCF :https://www.youtube.com/playlist?list=PLesyu_gd_4TGCImJ0H0E1sgOP5_lbrQfv

simple interest and compound interest : “https://m.youtube.com/playlist?list=PLesyu_gd_4TG_HqUFfqNZtRkWFDQGZpjS”

Geometry all concepts:

Alligation and mixture:

trigonometry: “https://www.youtube.com/playlist?list=PLesyu_gd_4TFzfpM_M0zLv4Hic_hCrQDE”

algebra:”https://www.youtube.com/playlist?list=PLesyu_gd_4THxb7fuJYruN4fA7pcIem8Y”

ratio and proportion:”https://www.youtube.com/playlist?list=PLesyu_gd_4THfb7PvuK2CJIoWmjFPDjAw”

profit and loss:”https://www.youtube.com/playlist?list=PLesyu_gd_4TENiYSK83yTFhqRAw28cAn-”

percentage:”https://www.youtube.com/playlist?list=PLesyu_gd_4TFK-4TBuhOn7XdMPETVFQNJ”

numbers system:”https://www.youtube.com/playlist?
list=PLesyu_gd_4TFueCoyZfkrzs2ivWk7gD7D”

source