After which year did the number of rabbits cross 800?
Time
Number of rabbits
Start
10
1 year
18
2 year
32
3 year
58
4 year
108
5 year
6 year
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Solution
From the table shown above we can see that
the number of rabbits is a little less than double the number of rabbits in the last year.
So in 5th year number of rabbits around = 108 x 2 = 216
6th year number of rabbits around = 216 x 2 = 432
7th year number of rabbits around = 432 x 2 = 864
So after 7th year the number of rabbits cross 800.