CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
2904
@pathakrahul said: cost of diamond is directly proportional to square its weight a diamond breaks into 4 pieces and the ratio of there weight is 1 : 2 : 3 : 4. after splitting cost of diamond becomes 1,40,000 what was the initial cost of diamond ? 1-----2 lakh 2---2.5 lakh 3----3 lakh 4-----4 lakh......explanation plz
bhai, I m getting answer as 4.66 lakhs.. u sure bout the data given?
2905

@masuka123 said:

Puys plz help me out the method to do this..

If x= cos^4(y)+ sin^2 (y) , then range of x is

bhai in my opinion this will happened only when value of both i.e sin cos should remain positive bcoz value of square is always a +ve no .......this will remain true only if both the angle will be in 1st coordinate ie 0
2906

@gudda1122 said:
bhai option galat hai
4.66 Lakhs aayega answer
bhai koi soln nahi deta >>>>>>>>>>>>>>>>>>>
2907
@masuka123 said:

Puys plz help me out the method to do this..

If x= cos^4(y)+ sin^2 (y) , then range of x is

0-----2?????
2908
@masuka123 said:

Puys plz help me out the method to do this..

If x= cos^4(y)+ sin^2 (y) , then range of x is

range is 0 to 1 for 0
2909
@masuka123 said:

Puys plz help me out the method to do this..

If x= cos^4(y)+ sin^2 (y) , then range of x is

@gudda1122 said:
0-----2?????
how?
2910

@pathakrahul said:
bhai koi soln nahi deta >>>>>>>>>>>>>>>>>>>
If C is the original cost, then it varies as the square of the weight. Initial weight is 1 + 2+ 3+4 = 10.. so 100w^2 = C
Now, after splitting, 1^2+2^2+3^2+4^2= 30..so 30w^2=140000
so 4.66 lakhs.. this is how I did.. Pls post the answer and the method sirji
2911
@pathakrahul said:
bhai koi soln nahi deta >>>>>>>>>>>>>>>>>>>
bhai
assume weight in the 1k.....2k....3k....4k....
and total weight will be 10k

now as given in the question
c=k(w)^2
k=constant
w=weight

c(1)=k(1K)
c(2)=k(4K)
similarliy find for other

it will be 30K(k)=14000


now this will be equal to 100k
as weight would be equal

(30K)/(100K)=14000/x
2912
@Brooklyn said:
how?
bhai 0----1 aayegi
yaar
bas yeh poocha hai x ki value max and mimimum kya aa sakti hai

and this is square so negative won't be possible

2913
@mickym said:
Sare cos ko sin ke form me lake expand kar do 2nd eqn ko
ho jayega
use Sin^2+Cos^2=1
are nahi ho hara bro..
pls help..
n also sum page num 143 be post #2860.. uska koi shortcut ho to pls tell
2914
@masuka123 said:

Puys plz help me out the method to do this..

If x= cos^4(y)+ sin^2 (y) , then range of x is

answer kya hai yaar
2915
@gudda1122 :vai 0-1 tha meko bhi laga dats y asked ven u said 0-2
2916
@wolverine1986 said:
@watsnew24 : : bhai full on explanation de do...not very comfortable with geometry


which q bro...????
2917

in trig abc angl a = 60, b = 100 and ab = 10 cm find ac........soln

2918

ab = A


A/sin c = C/sin c

n c=20
2919

( 1 + cos pi /10 )* ( 1 + cos 3pi / 10 ) *( 1+ cos 7pi/10) * ( 1 +cos 9pi/10) = ?...soln plz

2920
@pathakrahul said: cost of diamond is directly proportional to square its weight a diamond breaks into 4 pieces and the ratio of there weight is 1 : 2 : 3 : 4. after splitting cost of diamond becomes 1,40,000 what was the initial cost of diamond ? 1-----2 lakh 2---2.5 lakh 3----3 lakh 4-----4 lakh......explanation plz
plz check Is 1.4 lakh diffrence between the cut & uncut diamond....

then answer will be 2 lakh
2921

@watsnew24 said:
plz check Is 1.4 lakh diffrence between the cut & uncut diamond....then answer will be 2 lakh
bhai soln
2922
@watsnew24 said:
plz check Is 1.4 lakh diffrence between the cut & uncut diamond....then answer will be 2 lakh
ditto
2923
@pathakrahul said:
bhai soln
Bhai 2 lakh tabhi ayega jab 1.4 lakh jo aapne diya hai that is the DIFFRENCE between cut & uncut diamond

100k = x

30k = y

x-y = 70k = 140000

k = 2000

100k = 200000 = value of uncut diamond