SOLUTION: 1.Find the sum of the even integers between -24 and 226, including end numbers.

Question 1151999: 1.Find the sum of the even integers between -24 and 226, including end numbers.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!

The series which we want to add can be given as :

,,,........,,

Sum of N numbers in AP is given by:

........where, = First element in AP, = Last element in AP

According to the series we have number of total elements which can be calculated as:

, where = number of elements.

in your case , ,

now we can find the sum:
.....substitute ,, and

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