Class 12-Business Maths - Chapter 1 - Applications of Matrices and Determinants

Exercise 1.1 
https://www.youtube.com/watch?v=P7WR01ud3Oc&list=PL2qtWkm0Z4ccrZANvMNdTxTRoG3Qk3Kh3
Exercise 1.2
https://www.youtube.com/watch?v=4iknFjVkE4k&list=PL2qtWkm0Z4cfgVDqDCdLvAkr-sd2Spz_I 
Exercise 1.3
https://www.youtube.com/watch?v=R1V9MYCFlqU&list=PL2qtWkm0Z4cej8tyLvMiifh219J5tpqzJ
Exercise 1.4
https://www.youtube.com/watch?v=Rb5lMoccZ_M&list=PL2qtWkm0Z4ccefawRWhrjrRHgcyK1w2sw
Examples
https://www.youtube.com/watch?v=eulIVvj8Jvg&list=PL2qtWkm0Z4cfv9_t1gFO14VM8evSPyLUd
Miscellaneous problems
https://www.youtube.com/watch?v=vYyAtk54yeI&list=PL2qtWkm0Z4ccjIOND9oeP4myWv7w3T0VE