Quantitative Aptitude
Count arrangements and selections with repetition and restriction rules.
Short placement-focused notes — steps, traps, and worked patterns for Permutation and Combinations.
Read theoryHow to prepare Permutation and Combinations for campus quantitative aptitude — practice path and exam strategy.
Start with the theory page (/aptitude/quantitative/permutation-and-combinations/theory), then complete practice set 1 untimed on /aptitude/quantitative/permutation-and-combinations. Review every solution, repeat set 2, and attempt mock set 1 (10 MCQs in 20 minutes) when accuracy is above 65%.