In most of the placement papers , Mathematics plays major role than Arithmetic.
Most of the important chapters are from Algebra, Trigonometry , Statistics , Permuations and combinations and probability.
In placement papers like TCS , maximum questions will come from permutations and combinations and Probability. Students must practice the question given in the these chapters , before they try to attempt the questions given in the previous placement questions or model questions to placement papers .
Set theory and Functions are two important chapters , student must learn for all placement papers.

1.Set Theory - Concept and Important Formulae

2. Statistics - Concept and Forumulae

We will publish more chapters  very soon.