# math

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if i buy 2 mouse on january 1 1998 which is 1 male and 1 famale the female mouse gives birth every two month 1 male and 1 female the same circle happens with all the female mice for 2 year i need the know the total number for mice because i need to sell them on january 1 2000

• math -

make a chart
Jan 1/98 ...1 male....1 female = 2 mice
Mar 1/98 ...2 males...2 females = 4 mice
(the 1 female produced a new male and a new female, add these to what you had)

May 1/98 ...4 males ... 4 females = 8 mice
(the 2 females produced 2 new males and 2 new females, add these to get 4 males and 4 females)

July 1/98 the 4 females produce 4 new males and 4 new females, so now we have
8 males and 8 females, for a total of 16 mice

Can you see the pattern?
Can you predict what it would be after 12 steps like above?

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