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the weighed arithmetic mean of the numbers 1,2,3,4,......,10,the weights being the corresponding numbers is

6 years ago


Answers : (1)


Dear sri


  waighed airthmatic mean = [ 1*1 + 2*2 + 3*3 + ...........+10*10] / [1+2+3 + .....10]

                                      =[10(10+1)(20+1)/6 ] / [10(10+1)/2]



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6 years ago

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