CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
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@watsnew24 said:
bahut zyada hai yaar calci
options substitute karlo bhai
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@watsnew24 25km in 8hrs in still water..Aur 35km upstream and 52km downstream
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@micky0007 said: the area of a circle whose radius is 8 cm is trisected by two concentric circles the ratio of radii of the concentric circles in ascending order is
1:rt2:rt3 ??
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@gudda1122 said: bhai log answers nahi h un questions k
but i hink aap logo ne sahi solve kiye honge
but still agar kisi question mein kuch locha hai toh bata do
yaar woh light chali gayi thi yahan par
bhai semi circular wale ka 11 hai ya 12.........i think 12 hai bcz semi circle ki radius hi slant length banti hai cone ki........n 22/7*14=44=2 pi R(R radius of cone)......R=7.......h=rt (196-49)=12 approx
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gud evening puys........

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@JS-M said:
1:rt2:rt3 ??
plz elaborate it
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@anurag1701 said: Q.A motorboat travelling at some speed can cover 25km in 8hrs.At same speed it covers 35km upstream and 52km downstream in 11hrs.The speed of stream is (in km/hr)a.2 b.3 c.4 d.5 ??answr wid method plzz
speed of the boat=25/8

speed of the stream=x

35/(3.125-x)+52/(3.125+x)=11

solve karna answer aa jayega

or best way to do this kind of questions is by using options

5/4 answer ho nhi sakte hai
so bas 2/3 se honge
which i think 2 hai kya answer?????
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@anurag1701 said:
@watsnew24 25km in 8hrs in still water..Aur 35km upstream and 52km downstream
bhai i think 25km upstream n 39km downstream .in 8 hour n Aur 35km upstream and 52km downstream in 11 hour que ye hai
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@watsnew24 - dese r common questions , u can get it on google easily - check it out
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@harsh1839 said:
@watsnew24 - dese r common questions , u can get it on google easily - check it out



???? which q
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@JS-M said: gud evening puys........
gud evng bhai....movie dekhte hai ab.....
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@watsnew24 - that mixture acid one
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@gudda1122 Method aap sab ka sahi hai..par questn is wrong.Koi optn satisfy nhi kar raha hai...Sandeep bhai ne jo questn btaya..i guess dat is d correct question.


@sandeepv882 said:
bhai i think 25km upstream n 39km downstream .in 8 hour n Aur 35km upstream and 52km downstream in 11 hour que ye hai
@sandeepv882 Thanks bhai nhi abhi mai pta nhi kitni baar apni calculation aur check krta
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@watsnew24
@VENRAG Below is correct questn..Btw aaplogo ka method was absolutely rght
@sandeepv882 said:
bhai i think 25km upstream n 39km downstream .in 8 hour n Aur 35km upstream and 52km downstream in 11 hour que ye hai
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@JS-M said: gud evening puys........
bhai question batao ge ya nahi

actually i am going somewhere

concentric circle wala
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Q.A solid is hemispherical at the bottom and conical above.If the surface areas of two parts are equal,then ratio of radius and ht of its conical part
a.1:3 b.1:1 c.3^2:1 d.1:3^2 ??

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can anyone upload / gv link to last yr's question paper tier-2 ???

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@micky0007
let radius of circle be a,b,c in increasing order then;

pie a^2 = pie( b^2-a^2)
2 a^2 = b^2;------(1)

pie ( c^2 -b^2) = pie ( b^2 - a^2)
a^2 + c^2 = 2 b^2;------(2)
sub (1) in(2); also c=8 given

a^2 + 64 = 4 a^2
a=8/rt3; sub in (1)

b=(rt2 * 8)/rt3;

c=8;

8;(8/rt3);(rt2*8)/rt3= 1:rt2:rt3
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@micky0007 said:
bhai question batao ge ya nahi
actually i am going somewhere
concentric circle wala
sry dude.....phone aa gaya tha
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frustum of cone = pie* h *( R^2 + r^2 + R.r )/3;