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What is the formula for the sum of first hundred odd numbers?

This is the way I would do it:

The sum of the 1st & 100th numbers = the sum of the 2nd & 99th numbers = the sum of the 3rd & 98th numbers all the way to the sum of the 50th & 51st numbers; each of the sums equals 200. So I would multiply 200 by 50 (10000).

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A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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