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what is the sum of all the odd integers between 8 and 26

 Aug 16, 2015

Best Answer 

 #2
avatar+128598 
+10

The sum of the first "N" positive odd  integers = N^2

 

There are 13 odd imtegers between 1 and 26, inclusive.....and there are 4 odd integers between 1 and 8, inclusive

 

So....the sum of the odd integers between  8 and 26  equals the difference in the above, and we have....

 

13^2  - 4^2  =   169  - 16  =  153

 

 

 

 Aug 16, 2015
 #1
avatar
0

From 9 to 25 : sum of odd Integers us 53

N.T

 Aug 16, 2015
 #2
avatar+128598 
+10
Best Answer

The sum of the first "N" positive odd  integers = N^2

 

There are 13 odd imtegers between 1 and 26, inclusive.....and there are 4 odd integers between 1 and 8, inclusive

 

So....the sum of the odd integers between  8 and 26  equals the difference in the above, and we have....

 

13^2  - 4^2  =   169  - 16  =  153

 

 

 

CPhill Aug 16, 2015
 #3
avatar
0

How comes 153?

9=9

10=1

11=2

12=1

13=4

14=1

15=6

16=1

17=8

18=1

19=10

20=0

21=1

22=0

23=3

24=0

25=5

SUM = 58 Odd integers

 Aug 16, 2015

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