排列与组合做这类题有什么不用公式的灵活办法吗?求指导,最好举例子
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/09 07:12:43
![排列与组合做这类题有什么不用公式的灵活办法吗?求指导,最好举例子](/uploads/image/z/1706082-42-2.jpg?t=%E6%8E%92%E5%88%97%E4%B8%8E%E7%BB%84%E5%90%88%E5%81%9A%E8%BF%99%E7%B1%BB%E9%A2%98%E6%9C%89%E4%BB%80%E4%B9%88%E4%B8%8D%E7%94%A8%E5%85%AC%E5%BC%8F%E7%9A%84%E7%81%B5%E6%B4%BB%E5%8A%9E%E6%B3%95%E5%90%97%3F%E6%B1%82%E6%8C%87%E5%AF%BC%2C%E6%9C%80%E5%A5%BD%E4%B8%BE%E4%BE%8B%E5%AD%90)
x=rHh"mǴ~ܘ}bbe(:m%RKHP"Fa3+Arl 2,蛿٪,ª٩ؽ9V+
n>
ެYE1SG,{nƜ=mbV_Z3Botk3fּ-7?{Q?AHa읰l,`i[}GfbagpfvΪmovcy:-nMr-f'ÚΩN zSxI2V
Xa
h2zeH9@`
vhW \r>^r4Ʈ1!AD7ݶU (}
Ogc:m_L6 Nx՝K
;9s0*;v-fZhl~ǽbޕitZ
5֚%R $ɛ6ٽt@ɸUƉ3%L{L{ >ad#'x7[q$2 h(RɕRV:!oEV齂_xsFtxxǸ2zoJ;}] @ Btk=1"~Y%h*:P
_hDUb̕(b&HHux634+r
u?xԡ1 )\Mjc,6D7
P%hfv+3@o<,h#&)>VDSRA
rfD9xDB p>\\TD4v\05c9&]*4u#\%+আM)p+n*TŪU~֢ng0rRE<Δ}Z%#KxxD$7"yH\Mhm=FL]L!?!C1GZ͚] ]k{ZX[ԏU3͖
<ࠢFF+d`D(̓zm|3eozBOzOT>oòN3ȗY>NKX>6Z҃;<[@=jt~Q/u{Z-tyru* N SqDR($,., \iT¼]o>:ǵ(a"(ظZ ;> K2~O//R?DJ
S ͅ`R?~p"lǀI|,yUc|u|g&>7U#|N_^LO&O&s]Z D|7'1@ǟ47"!\ 5ڕ]g}\U8e}{Ǯ8[t
u[^j\?7;]LA>ǚemK1R NFk]ע ԞӾ'ˉ'rId̰e>QUi16W+&YryB_=B&lPL.cxJu*ۍ#=D@B@g0
cj8F9I9(@\z#1 D@oippXwfDC$B?ЂMEУ;e`! !!Wn2]b ~ϬѐL?.:LMJR.UHcqq/abX)t
m\HxBI0>9`kgn z¹;w%)eS_M}?@GBѹSsG%/w2
{:2k߀jwX8[`w9-P/kڮnƨDXC-ݥ[鬋#k,ktݤI薀ȇ[Nkn#DrEӐ,8)mRC2֮0rYi883}>f6@_1l\Z5{6P&ut]3R 1<|x=EFa Rw qhuk4Xқ% p-DD!b&4GIV b#["+Z73_W'~]Muw~trw),q=Nڋ !8vtY:^`ڴ l
`5lĤXM )K-YX'l^$&0O7$(G)0ZR`=$C
8EVeEhмtdڠ8בJ DP#EsBK@5е[Kt\ ©*c14J Ni_
;@HY-]@*?tϬ.]i|Xz!;ڽ|7\n>2NRh!EUoaH~Z;5hŮ՚.nXdfEoK
6.{Z`>`7Za\vS!᐀r-|=gנd.u7*+N5Aȥ0\9xlG
xYgS:LE),aWH}O=E/P1GpQх$kk3{W27i)xLo?y`-yBMSX!{, KHIÝw7
gm/Tq]a~У~(0@iOL+B*!
١(KB=t6j҈:0rLYssJk@em`GcZ
@=[HD