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Three ways.. Multiply n by itself. Calculate Sum[2i+1,{i,0,n-1}] Calculate Sum[n,{i,1,n}]
You square each number and multiply that by the frequency with which that number appears. You then sum together these results.
A box has six square surface; the total surface area of each box is the sum of the surfaces of the six squares. If you have 4 boxes: * If all are the same size, calculate the above, then multiply by 4. * If they are of different sizes, calculate each box separately, then add everything up.
The sum of a [single] square equals the square.
How can anyone have doubt in this question. Square of 3= 9 Square of 5= 25 Square of 7= 49 Total is = 83