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Finish the sequence
1,1,2,3,5,8,_,_,_

2 Answers

3 votes
The Fibonacci sequence has to be thought of in these terms:

F₀, F₁, F₂, F₃, F₄, F₅, F₆, F₇, etc, etc

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Now:

F₀=0

F₁=1

The formula you use to get the other numbers is:


F_(n) = F_(n-1) + F_(n-2)

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So:


F_(2) = F_(2-1) + F_(2-2) = F_(1) + F_(0) =1+0=1

And:


F_(3)= F_(3-1) + F_(3-2) = F_(2) + F_(1) =1+1=2

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If you continue using the formula, you should get a sequence that starts off like this:

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, etc, etc
Finish the sequence 1,1,2,3,5,8,_,_,_-example-1
User Anne Quinn
by
8.1k points
4 votes
This is a Fibonacci sequence
1; 1
1 + 1 = 2
1 + 2 = 3
2 + 3 = 5
3 + 5 = 8
next terms:
5 + 8= 13
8 +13 = 21
13 + 21 = 34


User Rob Haupt
by
8.5k points

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