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Rabbits. Rabbits: Month 1. Rabbits: Month 2. Rabbits: Month 3. the first birth. Rabbits: Month 4. the second birth. Rabbits: Month 5. Two births: The purple ones are now old enough. Rabbits: Month 6. Rabbits: Month 7.
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Rabbits: Month 3 the first birth
Rabbits: Month 4 the second birth
Rabbits: Month 5 Two births: The purple ones are now old enough
The number of new pairs produced depends on how many pairs there were two months ago 3 pairs inmonth 4 3 births in month 6
|Births| = |Pairs| two months agoTwo months later: all grown up and ready to get busy 5 pairs inmonth 5 5 births inmonth 7
Total rabbits = old rabbits + new birthsThe Fibonacci numbers fn = fn-1 + fn-2 f1 = f2 = 1