Arithmetic sequence:
If you take a sequence of numbers, the difference between any two numbers will be constant.
Eg: 2, 4, 6, 8, 10, 12, 14…..
Arithmetic series:
Sum of the above mentioned arithmetic sequence of numbers.
Eg: 2+4+6+8+10
Here is a question for u. How will you calculate the sum of the arithmetic series 2+4+6+8+10?
The formula is s = ((a1+an)/2)*n, where a1 is the first number, an is the last number and n is the number of sequence.
S = ((2+10)/2)*5 = 30
