All question answer video for Exercise-3(b) Arithmetic Progression including basic concept. https://www.youtube.com/watch?v=D57RkGryFpE Basic concept https://www.youtube.com/watch?v=Tv5Iykl_odg Q no. 1 & 2 https://www.youtube.com/watch?v=pdqT9TA_1_M Q no. 3 https://www.youtube.com/watch?v=bRdLICW5Sgs Q no. 4 https://www.youtube.com/watch?v=f10afC4xkJQ ସମାନ୍ତର ମଧ୍ୟକ (A.M.) Q no. 5,6,7,8&9 https://www.youtube.com/watch?v=9fiulTLI_Mc ସମାନ୍ତର ମଧ୍ୟକ (A.M.) Q no. 10 & 11