Question

Help me solve this mathematical induction ( 1 * 1! + 2 * 2! + ... + (n - 1) * (n - 1)! = n! - 1 where n > 0)

score 70 · Answer 1 · 2026-03-25 09:28:34

70

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Help me solve this mathematical induction ( 1 * 1! + 2 * 2! + ... + (n - 1) * (n - 1)! = n! - 1 where n > 0)

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score 64 · Answer 2 · 2018-01-30 11:05:26

64

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52

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121

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94

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score 372 · Answer 6 · 2026-03-25 17:28:15

372

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score 31 · Answer 7 · 2026-03-25 01:21:26

31

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35

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78

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score 618 · Answer 12 · 2026-03-22 21:10:55

618

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score 42 · Answer 13 · 2026-03-25 09:55:33

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score 623 · Answer 14 · 2018-01-31 17:29:03

623

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score 384 · Answer 15 · 2018-01-31 18:44:06

384

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List Question

Help me solve this mathematical induction ( 1 * 1! + 2 * 2! + ... + (n - 1) * (n - 1)! = n! - 1 where n > 0)

Numbers of ways to give 2 differently colored balloons

Understand finite discretisation with and without eliminating boundary conditions.

How to explain this 4! in the answer of this discrete math problem?

Contradiction and proofs

Probability question: setting up a recurrence equation

Matching pans with a fitting lid

Reverse order of summation for function on edges of a graph

I've got a formula for a generating function, but I can't seem to solve it

Derive $\frac{1}{x}$

The error when we rounding down and sum in $\sum_i \lfloor n/i \rfloor$ vs. $\sum_i n/i$.

Use combinatorial arguments to prove the following binomial identities

Looking for an example of a $\mathcal{L}$-expression

Determining Injective, Surjective, Bijective Functions over range of Integers

How to write a biconditional negative statement in if-then form

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