平面上有n个圆,每两个圆就相交于两点,每三个圆都不相交于一点,这n个圆把平面分成多少部分?

平面上有n个圆,每两个圆就相交于两点,每三个圆都不相交于一点,这n个圆把平面分成多少部分?
平面上有n个圆,每两个圆就相交于两点,每三个圆都不相交于一点,这n个圆把平面分成多少部分?

平面上有n个圆,每两个圆就相交于两点,每三个圆都不相交于一点,这n个圆把平面分成多少部分?
找规律
1个圆 2部分
2个圆 4部分
3个圆 8部分
4个圆 14部分
5个圆 22部分
6个圆 32部分
……
增加的规律是2、4、6、8、10、……
因此n个圆时,是2+（n-1）n个部分

Twelve Constellation who is the most ruthless
the first to: Scorpius
no matter what, Scorpio always categorically, there is no room for
like breaking up at all, are we not
stop dre...

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Twelve Constellation who is the most ruthless
the first to: Scorpius
no matter what, Scorpio always categorically, there is no room for
like breaking up at all, are we not
stop dreaming the day when love how Rujiaosiqi
can do after breaking up the slightest fan friends
Sorry, Scorpio can not really counter-face identification after
and speed, such as rockets, can make the other sad stricken.
second: Aries
between blood and the cold-blooded but Yicha
the face of passionate Aries
do not think he will be so hot when breaking up
you have the ability to get up in the bed of a
then discovered he was dating is not for you,
real-time wave of the sleeves will not take away a little romance
heart of stone, Aries be described as one of the best
third: Aquarius
soon as they said go baggage does not take away the bottle
the attitude of love is still consistent
do not expect a change of heart you soft-hearted
do not expect you to make because of the soft power it heart warming
Basically, the level between friends and lovers too vague
with too rational,yves saint laurent shoes sale, rather than dragging
better to make a clean break may be even more happy
fourth: Leo
are self to blame
ruthless at all at times need to see is the first to propose
if not by the immediate feelings of the party to announce the death of a lion, then
I can tell you
regardless of how the other would like to restore the old Huan
outcome does not help
After all, you hurt the dignity of
knife 2 may be the only face the way you
fifth: Taurus
The Taurus has always been a pragmatic people,
since decided to break up the words really
your face attitude, would the same as business-like
half hours without a human at all
you will information on a variety of theories and models
calculation of gains and losses
family might save by nature leave some objects for personal use
but the protagonist Well, please leave the line of sight as soon as possible
sixth: Capricorn
may not be your cold
but you really do not know how to express his mind,christian louboutin shoes, emotions Lei Shi
in your dictionary, a non-lover,jimmy choo wedges uk, a non-enemy
just plugs the relationship between the head and plug
one is not plugged in, one does not get open, like there is no gray area
But when it comes the end, your recovery time
fact, much longer than any other constellation of Valentine's
affectionate and cruel, may be just a marginal difference
seventh place: Gemini
goodbye to several friends, family remains the first choice must be the twin
for the love of a large group of friends and the public is with the music Twins
friends and the biggest difference between the particles spend
may simply have no bed activities carry on
In addition you will feel transformed by the friends of the opposite sex pills take
not only easier to understand your needs
Sometimes it can continue to coquetry!
eighth: Virgo
In fact, some constellation ruthless
but the process of breaking up
always routine of dragging a
of the best examples can be regarded as women Office
not think that a woman's petty office will bite each other tightly sick
as long as the decision to draw the line with each other
you will be resorted to a trick to treat each other as strangers
acting enough to go ahead and compete for Best Actress
ninth: Cancer
Regardless of the circumstances
pretending to be invisible most understand Cancer
Pa Zhipa too sentimental and not the opposite ruthless
some benefits to you as long as the other party
you will obediently return to their nests to continue living
So for \
unless you have another one soon
otherwise believe that breaking up
you must also suffering for some time would the chronic misery.
tenth: Pisces
compared with Cancer
Pisces is even more dramatic
In other words, regardless of whether it is a fact break
or do you have another affiliated
that you and the original
can still continue to be a secret couple
love one more chance
for this thing called love
Pa Zhipa your emotions without knowing too much
careful Health
eleventh: Sagittarius
tight troops do not always catch
not heartless
but no time to talk to you wasting their time, waste of
in love, the spent grain to the horse people around you waiting for
already a very difficult matter
to break up after he ate a meal with you
believe even more difficult
but do not a couple
for the troops in terms of
friends might provide a good alternative to
12th place: Libra
not to mention ruthless
scales were famous sentimental look back, they love to eat
to his ruthless
believe that only anti-climax of the story need to have this under the
the face of the scale people,cheap christian louboutin shoes, indecisive by nature
even say they broke up
usually scattered again, to complete and then complete and again no matter how loose powder after
finally end up to nothing
to his ruthless, sad beyond the bounds of
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