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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.
+et+tGd0h`b [/size]
&Ah&B5MqY [size=10pt]If 3 bulbs are chosen at random without replacement,
3m*Wm7[9L2R [/size]
']p3N
o.K*{q [size=10pt]then what is the probability that none of the three bulbs selected are defective? [/size]
a9HM? aQ [size=10pt]sol)K4|J
O3WF3@
[/size][font=Shruti][size=10pt][/size][/font]7buB.MDe Ky
[size=10pt]5. In a Isosceles triangle STU,
t2Z4NxC)|Bm [/size]
1w%S1u2X\ ^ A/w W [size=10pt]the sides ST = SU and ‘p’ is any point on UT, then which of the following might be true? [/size]
NY tD2g3{+f R [size=10pt]I. ST[/size][size=10pt] > PS [/size]HZ}!z6HeLr
[size=10pt]II. PU > ST [/size]
!F|3X#|iY4R [size=10pt]III. PS > PT [/size]
t p3a%q O#^,PS5R#m [size=10pt]A. Only I [/size]
6tJ Sa Q$_G6X6Y;U [size=10pt]B. Only II [/size]
b!M}R)Pf7r [size=10pt]C. Only III [/size]
u w J3crKbD [size=10pt]D. Only I and II [/size]{V.{fp)?h
[size=10pt]& so on……… [/size]
F a'U/Ur;\^TW [size=10pt]sol) A [/size] A(kl4| lo6U
[font=Batang][size=10pt]이등변[/size][/font]
Rg
p4Hca4Y [font=Batang][size=10pt]삼각형[/size][/font][size=10pt] STU [/size][font=Batang][size=10pt]에서[/size][/font][size=10pt],1sZv |2^+X!keW:K(U
[/size] Au%^v8uj1T4ga
[size=10pt]ST = SU [/size][font=Batang][size=10pt]이고[/size][/font][size=10pt], p [/size][font=Batang][size=10pt]는[/size][/font][size=10pt] UT [/size][font=Batang][size=10pt]에있는[/size][/font]
6t3H?zZ
OX/C
R:X6J [font=Batang][size=10pt]점이다[/size][/font][size=10pt]. [/size][font=Batang][size=10pt]다음[/size][/font]eY9r0lD
[font=Batang][size=10pt]중[/size][/font]$nOW@kj*j1tL
[font=Batang][size=10pt]참인[/size][/font]
:c_4o!J I*G|!J [font=Batang][size=10pt]것은[/size][/font][size=10pt]? [/size]+[6fw'NY!A
[size=10pt]I . ST > PS ([/size][font=Batang][size=10pt]참[/size][/font][size=10pt]) [/size]
t
tv Y^5c:R [size=10pt]II. PU> ST [/size][font=Batang][size=10pt]알[/size][/font]vlCm8h
[font=Batang][size=10pt]수[/size][/font]
1~?8J3SS&V3d V,^K [font=Batang][size=10pt]없다[/size][/font]
$UMqWlZx [size=10pt][/size]$|7C6b7mARy(y^
[size=10pt]III. PS > PT [/size][font=Batang][size=10pt]알[/size][/font]
&V
XA:n1_ Q [font=Batang][size=10pt]수[/size][/font]!h5sM&[IC
[font=Batang][size=10pt]없다[/size][/font]Y/i8FF+| b
[size=10pt][/size]
2tD.a5[P4\7b F*F [size=10pt]R'b8F4Os2n+O}
[/size]4r8d u.fs(J5q$MQIf#as
[size=10pt]6. There are 67 children in a community.
*@vlt%q [/size]
5y#O8o7J5M@/e+Tv+\X [size=10pt]If 52 like biking, 21 like skating and 12 like both,
-x9y+zN4E3L c \ [/size]^:L-rY1WT
[size=10pt]then number of children who like neither biking nor skating? [/size]
xC)`G}4^v{"tx)F [size=10pt](Similar to this) [/size]
z R5Y/L*A\ [size=10pt]sol) 6 [/size][font=Batang][size=10pt]명[/size][/font]3wi[&\(I(RP&BK
[size=10pt][/size]H5sp.dF;H2U#P,l
[font=Batang][size=10pt]한[/size][/font]JS3a/n l)R$v){
[font=Batang][size=10pt]단체에[/size][/font] tR;ca+F G _
[font=Batang][size=10pt]어린이[/size][/font][size=10pt] 67 [/size][font=Batang][size=10pt]명이[/size][/font]7e#A#Dk8d!Ny
[font=Batang][size=10pt]있다[/size][/font][size=10pt]. [/size]
:@0v n)Hkm)x5X1v [size=10pt]52 [/size][font=Batang][size=10pt]명은[/size][/font]*^:R WqKMAD
[font=Batang][size=10pt]자전거를[/size][/font]-J"Z6HOx'X!V
[font=Batang][size=10pt]좋아하고[/size][/font][size=10pt], 21 [/size][font=Batang][size=10pt]명은[/size][/font]
1w tIT!yh!a*D&g [font=Batang][size=10pt]스케이팅을[/size][/font]
%I} F;lw-}8hL [font=Batang][size=10pt]좋아하고[/size][/font][size=10pt], 12 [/size][font=Batang][size=10pt]명은[/size][/font]~`BJ1@\p_1a/m6Z
[font=Batang][size=10pt]둘[/size][/font]u$k*Vv%P?wU
[font=Batang][size=10pt]다[/size][/font]
S,L F.iOt5Z2W{ [font=Batang][size=10pt]좋아한다[/size][/font][size=10pt]. [/size]
jN,C:y2iN:V0k [font=Batang][size=10pt]자전거[/size][/font][size=10pt], [/size][font=Batang][size=10pt]스케이팅[/size][/font]+y4A'{\ k~fy*OT2Z
[font=Batang][size=10pt]모두[/size][/font]#Tc[7IZ s
[font=Batang][size=10pt]좋아하지[/size][/font]vh~z(l3Z],t
[font=Batang][size=10pt]않은[/size][/font]
?oHKgs1QDr [font=Batang][size=10pt]어린이의[/size][/font]
'zp3{~e c)aS [font=Batang][size=10pt]수는[/size][/font][size=10pt]? [/size]
R%K,j-nn}M [size=10pt]S U B = B(52)+S(21)-B*S(12) = 61 [/size]
!aS!C_ s&p.c [size=10pt]C;M'yD;A9j#z
[/size]
_+]z8H1ud [size=10pt]7. Given Set P = {1.3, 0.9, 1.5, 1.1} and [/size](H{A{fe(a*M
[size=10pt]Set Q = {1.3x, 0.9x, 1.5x, 1.1x}, then [/size]
4fX],y(GX2g}.f [size=10pt]Col[/size][size=10pt] A: Standard deviation of P [/size]
K De\.SC [size=10pt]Col[/size][size=10pt] B: Standard deviation of Q [/size]
;j p!f&H$Lb A6p
a;v [size=10pt]sol) D, The relationship cannot be determined from the information given. [/size]
8m?8c/{~*]H.}[/F5B [font=Batang][size=10pt]변수들간의[/size][/font]vEP,dh Oe*W
[font=Batang][size=10pt]편차도[/size][/font][font=宋体][size=10pt]…[/size][/font][size=10pt]x [/size][font=Batang][size=10pt]배[/size][/font]h"[q)Qb
[font=Batang][size=10pt]변한다[/size][/font][size=10pt]. [/size]WR{Q8t?
a
p0l,IT
[size=10pt]e.ih`!fmlc
[/size]4T
p1d2a'q/an)o
[size=10pt]8. Given that there are 3 hooks and 5 pictures,
hdp,PV$bJA(G [/size]
;u kHqHhQ2t#b [size=10pt]find the numbers of ways to select 3 picture combinations? [/size]
m[~1JgX-m+\ [size=10pt]sol) 10 [/size]R fUlEx
[size=10pt]3 [/size][font=Batang][size=10pt]개[/size][/font]i0yq&i.g$Q
@
[font=Batang][size=10pt]걸이와[/size][/font][size=10pt] 5 [/size][font=Batang][size=10pt]개[/size][/font]2V3NEYLY$|/Z
[font=Batang][size=10pt]그림이[/size][/font]
#W;q4t-rL:c [font=Batang][size=10pt]있다[/size][/font][size=10pt]. [/size]
;u3V%f're(tD/r [size=10pt]3 [/size][font=Batang][size=10pt]개[/size][/font]
,AF)}&[;oKC-Z [font=Batang][size=10pt]그림을[/size][/font]L_&uL9Z
[font=Batang][size=10pt]선택해서[/size][/font];r)wfWMO&~
[font=Batang][size=10pt]거는[/size][/font]
/i4]1u_Fe{v [font=Batang][size=10pt]방법의[/size][/font]]0GiF(N,H
[font=Batang][size=10pt]수는[/size][/font][size=10pt]? [/size]
2?+CI3w Y#H [size=10pt]5C3 = 10 ([/size][font=Batang][size=10pt]순서를[/size][/font]o,WK(U'o9Q
[font=Batang][size=10pt]생각하지[/size][/font]
q+a%Q)d R hCs [font=Batang][size=10pt]않고[/size][/font][size=10pt], [/size][font=Batang][size=10pt]중복을[/size][/font]
pR5ce.k$T/K:S [font=Batang][size=10pt]허락하지[/size][/font]GA8q[sM
[font=Batang][size=10pt]않을[/size][/font]-k d-R ] Q5PC ?
[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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