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The formula is 


where n is the number of terms

0 0 0
Number of term is not given
hope it helps
plz mark as best
I think the answer is 1 because the question states"integer" which means only one
1st integer is 1 and n(n+1)
therefore 1+1/2 =1
i think bcuz there is no way else for it

1 5 1
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