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michelle_winner 发表于 2009-11-7 04:09

从韩国网上淘来的math JJ--11/05--分享给大家2-接上一个

[size=10pt]4. There is a bag which consists of 10 bulbs, out of which 2 is defective.
?G!rF)x1?6A~ [/size]U;m6g#Ng+k{ BM
[size=10pt]If 3 bulbs are chosen at random without replacement,
i+\F5nuW [/size]h5esS y9b*L,v:oP
[size=10pt]then what is the probability that none of the three bulbs selected are defective? [/size]
Il6s@:zZ8v [size=10pt]sol)
2s5mw |:r3u [/size][font=Shruti][size=10pt][/size][/font]+MU/u bW:E
[size=10pt]5. In a Isosceles triangle STU,
w)s/~F.^*wy"@*e [/size]$j7qvswV |&V_
[size=10pt]the sides ST = SU and ‘p’ is any point on UT, then which of the following might be true? [/size]
7[5NIE(GWz(r [size=10pt]I. ST[/size][size=10pt] > PS [/size]@PR)l}9b:yc`
[size=10pt]II. PU > ST [/size]
xI`SK?0bs [size=10pt]III. PS > PT [/size]'}+A#o%b@
]K
[size=10pt]A. Only I [/size]$ZG*B3am
[size=10pt]B. Only II [/size]
7I-W|b9NVa4j [size=10pt]C. Only III [/size]%nK5b#`)? K F
[size=10pt]D. Only I and II [/size]
0RA8ovD [size=10pt]& so on……… [/size]Z2@S E Bg1G6a
[size=10pt]sol) A [/size]

g`!p.? qS/`*N [font=Batang][size=10pt]이등변[/size][/font]
5x|&En+VS R [font=Batang][size=10pt]삼각형[/size][/font][size=10pt] STU [/size][font=Batang][size=10pt]에서[/size][/font][size=10pt],0`A.xC$N b+_!x
[/size],U-bC\5E(Pz
[size=10pt]ST = SU [/size][font=Batang][size=10pt]이고[/size][/font][size=10pt], p [/size][font=Batang][size=10pt]는[/size][/font][size=10pt] UT [/size][font=Batang][size=10pt]에있는[/size][/font]
;V{_Ti
T2g2m [font=Batang][size=10pt]점이다[/size][/font][size=10pt]. [/size][font=Batang][size=10pt]다음[/size][/font]HP2P-Z.|V.k8M?
[font=Batang][size=10pt]중[/size][/font]1nE k6o Hw
y#[
[font=Batang][size=10pt]참인[/size][/font]6Lzf
JN7Bg
[font=Batang][size=10pt]것은[/size][/font][size=10pt]? [/size]
*Iw2V#|hJ
F }xT [size=10pt]I . ST > PS ([/size][font=Batang][size=10pt]참[/size][/font][size=10pt]) [/size]
OO2faQ.l6fxW"o [size=10pt]II. PU> ST [/size][font=Batang][size=10pt]알[/size][/font]
%LoKjI [font=Batang][size=10pt]수[/size][/font]:_8g|4kU [X u\
[font=Batang][size=10pt]없다[/size][/font]
3|!v*@t{ [size=10pt][/size]:D3KM_4Rv
[size=10pt]III. PS > PT [/size][font=Batang][size=10pt]알[/size][/font]2Xh:c9RFK!@.i
[font=Batang][size=10pt]수[/size][/font]iB0{Q*T5qWP
[font=Batang][size=10pt]없다[/size][/font]
&R#th&~S7G;Qd)V [size=10pt][/size]
j|)Y
U U*Y_P;qz1nfu [size=10pt]sj\3eT;_
[/size]S@#o},um!{.Z
[size=10pt]6. There are 67 children in a community.[H+EE&M/WYA#x ^
[/size]/K9iG5cRW.Gh2l
[size=10pt]If 52 like biking, 21 like skating and 12 like both,
J@U$?M"O [/size]
n\c'U6H-U-EI9rT [size=10pt]then number of children who like neither biking nor skating? [/size]!_-Z#A&E/[L({.n7k
[size=10pt](Similar to this) [/size]l e;D [
O(v+r
[size=10pt]sol) 6 [/size][font=Batang][size=10pt]명[/size][/font]
SjK]{l1ZX1g [size=10pt][/size]#s)G ze i0wu
yXE
[font=Batang][size=10pt]한[/size][/font]
0XP_b3_ZYP!p [font=Batang][size=10pt]단체에[/size][/font];w0}'f bm:~)u
[font=Batang][size=10pt]어린이[/size][/font][size=10pt] 67 [/size][font=Batang][size=10pt]명이[/size][/font]
mnR0Y ~}2g_#I0Q [font=Batang][size=10pt]있다[/size][/font][size=10pt]. [/size]I
IkpT
[size=10pt]52 [/size][font=Batang][size=10pt]명은[/size][/font]
H
L/j"}x0E~&R [font=Batang][size=10pt]자전거를[/size][/font]
rCWt4Yl
[font=Batang][size=10pt]좋아하고[/size][/font][size=10pt], 21 [/size][font=Batang][size=10pt]명은[/size][/font]6Lv#a(tg|w.s4b
[font=Batang][size=10pt]스케이팅을[/size][/font]
3j-e?.~9rtY [font=Batang][size=10pt]좋아하고[/size][/font][size=10pt], 12 [/size][font=Batang][size=10pt]명은[/size][/font]
:x`2{VM [font=Batang][size=10pt]둘[/size][/font]~7a4NVW8O5~
[font=Batang][size=10pt]다[/size][/font]1eM/s:E2\'tv6a
[font=Batang][size=10pt]좋아한다[/size][/font][size=10pt]. [/size]+fQc6m:}kR+M
[font=Batang][size=10pt]자전거[/size][/font][size=10pt], [/size][font=Batang][size=10pt]스케이팅[/size][/font]
Q1R*aD/]ee!s [font=Batang][size=10pt]모두[/size][/font].]4B9Vxd+B;?
[font=Batang][size=10pt]좋아하지[/size][/font]L
u7[C5ktHR
[font=Batang][size=10pt]않은[/size][/font]"Rql.u*PnEn
[font=Batang][size=10pt]어린이의[/size][/font]
w;O8\;_N'A/^ w [font=Batang][size=10pt]수는[/size][/font][size=10pt]? [/size]
A#Vi9E O&XS|Fv [size=10pt]S U B = B(52)+S(21)-B*S(12) = 61 [/size]'VG/f6^Is0\-R
[size=10pt]
,`O7Qx"p9X N [/size]^QjEDzs_
[size=10pt]7. Given Set P = {1.3, 0.9, 1.5, 1.1} and [/size]
\.C U\U:e [size=10pt]Set Q = {1.3x, 0.9x, 1.5x, 1.1x}, then [/size]#XV7W$z#b f6[
[size=10pt]Col[/size][size=10pt] A: Standard deviation of P [/size]u/wHL@[b,cZ
[size=10pt]Col[/size][size=10pt] B: Standard deviation of Q [/size]
,i4Q#p4p!Mw7xij [size=10pt]sol) D, The relationship cannot be determined from the information given. [/size]
.tOO+}5OT [font=Batang][size=10pt]변수들간의[/size][/font]3b~A
_.u@*mL
[font=Batang][size=10pt]편차도[/size][/font][font=宋体][size=10pt]…[/size][/font][size=10pt]x [/size][font=Batang][size=10pt]배[/size][/font]
+aK/KWF:o [font=Batang][size=10pt]변한다[/size][/font][size=10pt]. [/size]
bzTA@q+v [size=10pt]
&o{(fH'y [/size]:r'xA*z-v p8@D
[size=10pt]8. Given that there are 3 hooks and 5 pictures, r2D}8mtx2A,?
[/size]'])H u.u4VD@K)}(_
[size=10pt]find the numbers of ways to select 3 picture combinations? [/size]/e2K:y!D,W e!M
[size=10pt]sol) 10 [/size]
b
ska:tkJ/o [size=10pt]3 [/size][font=Batang][size=10pt]개[/size][/font]
#f'g+x l,U;Cgk [font=Batang][size=10pt]걸이와[/size][/font][size=10pt] 5 [/size][font=Batang][size=10pt]개[/size][/font]
H`cx^6^ [font=Batang][size=10pt]그림이[/size][/font]x@7s0a"Zi
[font=Batang][size=10pt]있다[/size][/font][size=10pt]. [/size]
2SJ llm"b [size=10pt]3 [/size][font=Batang][size=10pt]개[/size][/font]B.m`5I yB0U:u
[font=Batang][size=10pt]그림을[/size][/font]%I2~ Dfn,T
[font=Batang][size=10pt]선택해서[/size][/font]
%@smX1];EvM [font=Batang][size=10pt]거는[/size][/font]6FbU |rvE"etq
[font=Batang][size=10pt]방법의[/size][/font]
Jr'^^J6o*v3j!Tj [font=Batang][size=10pt]수는[/size][/font][size=10pt]? [/size]
r'dX4jK9}k [size=10pt]5C3 = 10 ([/size][font=Batang][size=10pt]순서를[/size][/font]
o
R0C/`FGFPp [font=Batang][size=10pt]생각하지[/size][/font]
/l,|&_/jM6O5^_2fo [font=Batang][size=10pt]않고[/size][/font][size=10pt], [/size][font=Batang][size=10pt]중복을[/size][/font] K\rH_f[2p
[font=Batang][size=10pt]허락하지[/size][/font]
iV|:X.J3E [font=Batang][size=10pt]않을[/size][/font]
G's6F|An5}"[ [font=Batang][size=10pt]때는[/size][/font][size=10pt], Combination)[/size]

yicongl 发表于 2009-11-8 12:08

顶一下...LZ辛苦了

superkathy 发表于 2009-11-8 12:22

thank u ~~~~~

nitgonglei 发表于 2009-11-9 09:57

sh*t一样的简单

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