0Sequence :
A set of numbers arranged in a specific order is called a sequence.
Generally, a sequence is written as a1 ,a2,a3,……and each term in the sequence is called a term.
Example: 1) 2, 4, 6... 2) 1, 5, 9 ... 3) -5, 25, -125...
Series:
When the successive terms of a sequence are connected by plus or minus signs, the sequence is called a series.
Example:1) 2+6+8+... 2) a1 +a2 + a3 + ... 3) -7+49-343+...
