gracious391 gracious391

02-06-2018
Mathematics

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what is the sum of odd positive integers less than 50

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durgachetri678 durgachetri678

02-06-2018

S= n/2[2*a+(n-1)*d
Where n=number of terms,a=first term,d=common difference
Putting the values,
S= 25/2[2*1+(25-1)*2]
So the answer is 625

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