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Summit

Problem | Hint | Solution | Printable page |
Stage: 5 Challenge Level: Challenge Level:1

Prove that the sum

$$ \sum_{t=0}^m {(-1)^t\over t!(m-t)!} = 0 $$
Powers & roots. Manipulating algebraic expressions/formulae. alphas. Binomial Theorem. Mathematical reasoning & proof. Inequality/inequalities. Summation of series. epsilons. Quadratic equations. Stage 5 - Reviewed 2012.

Published January 2003.

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