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Answer:

5 + 8 = 13


Rabbits Rule

Thirteen Rabbits

 Month
12345678910
Female
Rabbits
11235813   

Here is what we have been doing:

rabbits for Month( N ) = rabbits from previous month + 
                         rabbits Born During Month( N )

rabbits for Month( N ) = rabbits from previous month + 
                         mature Rabbits During Month( N )

rabbits for Month( N ) = rabbits for Month( N-1 ) + 
                         rabbits for Month( N-2 )

Using this rule, to calculate the number of rabbits for any month just add up the numbers for the previous two months.


QUESTION 15:

What is the value for the end of month 8?