Matrices, Determinants & PnC Workshop | PGDBA Quant Preparation | Algebra Practice 4

Matrices, Determinants and Permutations & Combinations workshop for PGDBA entrance exam preparation (Quant section). A live practice session solving PGDBA-level questions on adjoint and determinant properties, the dictionary rank of a word, and selection problems with cases, step by step. 📚 Topics covered: • Determinant of A·adj A and powers of the adjoint, |adj(adj A)| • Problem: adj(adj 2A) using the determinant and trace • Simplifying nested determinant expressions • PnC: rank of a word in dictionary order (shortcut method) • Finding the word at a given rank, and words with repeated letters • Selection with cases: boys and girls from two groups ▶️ Complete PGDBA Algebra playlist:    • PGDBA Quant: Algebra | Quadratic Equations...   ▶️ All PGDBA Quant Workshops:    • PGDBA Quant Workshops | Problem Solving Pr...   ⏮ Previous: Algebra Problem Solving Workshop – Algebra Practice 3 ⏭ Next: Sets & PnC Workshop – PnC Practice 2 📌 Full PGDBA Preparation path: Algebra → Sets, PnC & Probability → Geometry & Trigonometry → Coordinate Geometry → Calculus → LRDI → Verbal → Quant Workshops → Previous Year Question Papers → Interview Preparation. 🔔 Subscribe for the complete free PGDBA course: Quant, LRDI, Verbal, solved previous year question papers and interview prep. Curated by Vishal Bagla, inaugural PGDBA batch alumnus. Independent channel, not affiliated with or endorsed by IIM Calcutta, ISI Kolkata or IIT Kharagpur. #PGDBA #PGDBAQuant #PGDBAPreparation ⏱️ Chapters 0:00 Matrix multiplication: elements of one row 2:04 Determinant of A·adj A and its properties 4:37 Powers of the adjoint 7:31 Problem: adj(adj 2A) from determinant and trace 14:26 Checking the answer 18:20 Simplifying nested determinant expressions 22:41 PnC: rank of a word in dictionary order 29:25 Rank of a number arrangement 31:33 Finding the word at a given rank 36:05 Rank of a word with repeated letters 39:07 Selection with cases: boys and girls from two groups 46:35 Division and distribution variations 48:03 Wrap-up