Difference between addition of even and odd number between 1 and 60
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Addition of even
formula
= n(n+1)/2
there are 30 even numbers in 1 to 60.
= 30(30+1)/2
= 465
total sum of 1 to 60 - sum of even = sum of odd numbers.
sum of 60 numbers
=n(n+1)/2
=60×61/2
= 1830
sum of odd numbers = 1830 - 465 = 1365
So the difference between sum of even and sum of odd is 1365 - 465 = 900.
is it correct
formula
= n(n+1)/2
there are 30 even numbers in 1 to 60.
= 30(30+1)/2
= 465
total sum of 1 to 60 - sum of even = sum of odd numbers.
sum of 60 numbers
=n(n+1)/2
=60×61/2
= 1830
sum of odd numbers = 1830 - 465 = 1365
So the difference between sum of even and sum of odd is 1365 - 465 = 900.
is it correct
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