Problem.
The sum of certain consecutive odd numbers is – Find the numbers.
solution
also from equ 1
therefore
similarly
a = 27 , d = 2
l= 113
a+nd = 113
27 + 2n = 113
n = 43
this is where I am facing the problem. To satisfy the condition I should have n = 44 and not 43.
because 57 - 13 = 44. other way to find the n.
Please correct my understanding...
Hello, chakravarthiponmudi!
You already have all the information you need.
That formula says:The sum of certain consecutive odd numbers is . . Find the numbers.
Solution
. . the sum of the first odd numbers is
So is the sum of the first 57 odd numbers.
. . and is the sum of the first 13 odd numbers.
Hence: .
. . . . . . . . . . . .
. . . . . . . . . . . .