• Permutation Formulas: Factorial formula: n! = n (n - 1) (n - 2) ... 3 2 1 and nPr Formula: ⁿ P _r (or) _n P _r = n! / (n - r)!
• Combination Formula (or) nCr Formula: ⁿ C _r (or) _n C _r = n!/[r!(nr)!]

Apart from the permutations and combinations, there is another important topic of "Binomial Theorem" as well which is used to evaluate the large exponents of algebraic expressions with two terms. Here the coefficients of the binomial terms are calculated from the formula of combinations. The below expression provides the complete formula for binomial expansion, and it can be termed the algebraic expression of the binomial theorem.

1. investigate the significance of acrylic acid as a secondary raw material derived from propylene. 2. Make cellulose acetate, a petroleum-derived product. By which appropriate parts of petrol sweet-smelling hydrocarbons are delivered? 4.critique; Alpha olefins are acquired by the atomic detachment of medium bubbling hydrocarbons. Use the oxidation of liquefied petroleum gas (LPG) to control the acetic acid. What is the significance of chlorination in the conversion of the distillation factors involved in catalytic cracking? How can the non-petroleum source be analyzed from the CaC2? Show the order in which the ethylene raw material obtained from petroleum can be used to make acetic acid? Explain what the term "petrochemicals" means.