Complete the following magic square, placing the numbers from 1 to 25 so that all the sums (vertical, horizontal and diagonal) add up to 65. THE NUMBERS CANNOT BE REPEATED

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Q: 2) State and use the appropriate formulae, find the sum of the odd numbers from 1 to 199, nclusive.

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Polynomials

Try substituting 1. You will get 6 and not 0. Try other real values also. What About -2? Let us check.