Question

find the sum of all natural numbers between 1 to 100

Answer 1

s100=100/2 {2×1+(100-1)1}
S100=50 (101)
s100= 5050

Answer 2

here is ur answer.......
this is an A.P
so, sum of all no.s is
sum=n/2(a+l)
       here n=100 and l is also 100 that is last term  100
      =100/2(1+100)
      =5050
so sum of natural no.s is 5050
hope it helps uh.................
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