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**Introduction**

**State & proof Binomial Theorem and Pascal triangle**

**Number of terms in expansion of following
(i) `(2x-3y)^9` (ii) `(2x+3y-4z)^n`**

**Expand `(x^2+2a)^5`; `(2x-3y)^4`;`(1+x+x^2)^3` by binomial theorem**

**(iii) Find an approximate value of `(0.99)^5` using the first three terms of its expansion.**

**Using binomial theorem prove that `(101)^50 gt(100)^50+(99)^50`**

**What is General and middle term in a binomial expansion**

**Term from the end of expansion**

**Coefficient of certain power of variable in binomial**

**finding term independent of variable**