Pascal's triangle
Pascal's triangle
A Pascal's triangle is a number triangle of the binomial coefficients. The first row of the triangle is always 1.
Basic concepts:
 Multiplying binomial by binomial
 Combinations
Lessons

1.
Expand:

c)
Use Pascal’s Triangle to expand:
i) ${\left( {a + b} \right)^4}$ =
ii) ${\left( {a + b} \right)^5}$ =

2.
Pascal’s Triangle  sum of numbers in each row

3.
Without using a calculator, evaluate: