CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
3769

@cbiofficer said:
bhai here similar triangle property is used
r/3=9-h/h
h=27/r-3
put it in formula of frustum
1/3 pie h(R^2+ r^2 + R x r)=44
put value of h in dis formula
bhai iska to cuberoot13 ans aa raha hai.........ssc2011 mains
3770
@VENRAG said: @sampras bhai..@cbiofficer bhai ...@ all here..any one pls help me in pointin where i went wrongThe height of right circular cone is 9cm n radius of circular base is 3cm. The cone is cut by a plane parallel to its base so as it divide it into two parts . The volume of frustum(lower part) of cone is 44 cubic cm. the radius of the upper circular surface of frustum ?sandeepv882 bro has posted this question ..n said ans is cube rt 17..but i messed sm where
using similar triangles h/9=r/3( h and r are dimen of small cone )
h=3r
vol of frustum= (1/3 pi *3^2 *9) - 1/3 pi* r^2* 3r = 44
27pi-r^3 pi=44
r^3 pi=22
r = cube rt 7
Quote
bhai yaha mistake lag raha hai...
r^3 pi=22 ..... should be pi *r^3 = 27 * 22/7 - 44 = 22*13/7
r = cube rt 7 ..... cube rt 13

3771
@cbiofficer said:
bhai here similar triangle property is used
r/3=9-h/h
h=27/r-3
put it in formula of frustum
1/3 pie h(R^2+ r^2 + R x r)=44
put value of h in dis formula
are bro similarity se kaise laye h and r me relation ?
3772

purchase 11 articles for rs 10 and sold all for rs 11 for 10 articles..wt is profit....
pls giv solution

3773
@watsnew24 said:
bhai I said D
........anwr z 'A'
3774
@JS-M said:
.......yr phele to 'symbolizing' galat use hai.....nd in 'C'.......'was' ka use check karo....shahi lag raha hai??
B???
yaar subah se screen par dekh dekh kar dimag kharab ho gaya h
now i am seriously considering getting off line
3775
@VENRAG said: purchase 11 articles for rs 10 and sold all for rs 11 for 10 articles..wt is profit.... pls giv solution
bhai 21%

110 article kharid k dekho
3776
@mrudalmodi said:
are bro similarity se kaise laye h and r me relation ?
bhaoo dono ka r or height ka ratio le lia
3777
@VENRAG said: purchase 11 articles for rs 10 and sold all for rs 11 for 10 articles..wt is profit.... pls giv solution
21%
3778
@sampras said:
bhai yaha mistake lag raha hai...
r^3 pi=22 ..... should be pi *r^3 = 27 * 22/7 - 44 = 22*13/7
r = cube rt 7
loved it....kabhi kabhi 27/7, 27/9 dhiktha he...hope i will rectify those
3779
@cbiofficer said:
bhaoo dono ka r or height ka ratio le lia
ohh.. dimag bandh h mera.. totally..
3780
@JS-M said:

A controversial figure throughout most of his public life, the Black leader Marcus Garvey advocated that some Blacks return to africa, the land that, to him, symbolized the possibility of freedom.

(A) that some Blacks return to africa, the land that, to him, symbolized the possibility of freedom

(B) that some Blacks return to the African land symbolizing the possibility of freedom to him

(C) that some Blacks return to africa which was the land which symbolized the possibility of freedom to him

(D) some Black €™s returning to africa which was the land that to him symbolized the possibility of freedom

(E) some Black €™s return to the land symbolizing the possibility of freedom to him, to africa

my take B
3781
@VENRAG [ (11 x11 -10 x 10)/(10 x 10) ] * 100 percentage
3782
@pathakrahul said: if 2ycos@ = xsin@ and 2xsec@ - ycosec@ = 3 , then the relation betwn x and y is .tried lot...now its ur turn puys......plz give soln if u got the ans..... 1) 2x^2 + y^2=2 2) x^2+4y^2=4 3) 4x^2+y^2 = 4 4) none of these.........( ssc 2012 tier 1 held on 8th jun ).coming after dinner
bhaiya iska ans ...2) x^2+4y^2=4 hoga ....
let angle be p for typing easyness ..... then tanp=2y/x and cotp=x/2y ....from Ist given eqn

now use secp = rt(1+tan^2p) and cosecp = rt(1+cot^2p) .... subst in the second eqn and solve...will get the answer...
3783
@watsnew24 said:
bhai 21%110 article kharid k dekho
@JS-M said:
21%

bhaiyon jus wanna share a beautiful shortcut ..very helpful in p&L; queest..

qty amt

11 ......... 10 ....100 ..........................(becomes cp)

10 ......... 11.....121 (cross multiplication).......(becomes sp)........profit 21 pc..

u can do hell lot of ques in micro seconds
3784

@cbiofficer said:
bhai here similar triangle property is used
r/3=9-h/h
h=27/r-3
put it in formula of frustum
1/3 pie h(R^2+ r^2 + R x r)=44
put value of h in dis formula
bhai do one thing............. conical shape dig nein upar cone banega aur neeche frustrum....
then vol of the upper cone = ( colm of whole cone - vol of frustrum )

1/3 pi r^2 * h = 1/3 *pi * 9 *9 - 44--------eqn 1

now jo dono conical shape bane hai ie upper cone and whole cone unko similarity thm se equal dikhao--apko milega h = 3r
now put this value in eqn 1 --u will get r ===== cube root 13

yaar without dig . its not possible

3785

@sampras said:
bhaiya iska ans ...2) x^2+4y^2=4 hoga ....
let angle be p for typing easyness ..... then tanp=2y/x and cotp=x/2y
now use secp = rt(1+tan^2p) and cosecp = rt(1+cot^2p) .... subst in the second eqn and solve...will get the answer...
bhai coming after 15 min................lunch + dinner+ supper........ karna hai
3786
@VENRAG said:
loved it....kabhi kabhi 27/7, 27/9 dhiktha he...hope i will rectify those
r= cube rt 13 aa raha hai bhai aapke method se bhi .... aapka soln bilkul sahi tha... jus there was calci mistake...
3787

A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and flames spreading more quickly.

(A) flames spreading

(B) flame spreads

(C) flames are caused to spread

(D) causing flames to spread

(E) causing spreading of the flames

3788
@JS-M said:

A fire in an enclosed space burns with the aid of reflected radiation that preheats the fuel, making ignition much easier and flames spreading more quickly.

(A) flames spreading

(B) flame spreads

(C) flames are caused to spread

(D) causing flames to spread

(E) causing spreading of the flames

D