Find the sum of odd numbers between 0 and 50

Asked by admin @ 05/08/2021 in Math viewed by 322 People

Find sum of all odd numbers between 0 and 50

Answered by admin @ 05/08/2021

Odd number between 0 and 50 are 1,3,5,7,9.....49
l=a+(n-1)d
49=1+(n-1)2
2n-2=48
2n=50
n=50/2
n=25
Sn=n/2(a+l)
=25/2(1+49)
=25/2(50)
=25(25)
=625.
Therefore the sum of all odd numbers between 0 and 50 is 625.

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