Braeside Park has a rabbit problem which started with 4 pregnant rabbits. Every rabbit born gives birth to 4 babies every 6 months. Assuming all rabbits are born female and live long,
fruitful lives how long many rabbits will there be after 3 years?

23. If your parents offered you two different options for receiving your pocket money, which of the
following would you choose? Option A: $200 per week Option B: One cent paid on the first day
of the month, two cents paid on the second day, 4 cents paid on the third day and so on, with
the amount received each day doubling until the end of the month.