CGL 2012 Tier 2 Preparations and Results

Staff Selection Commission (SSC) SSC - CGL
4629
@harshgupta88 said:
@VK_Shukla fir se try karo....
x+1/2x=2 means 2x^2+1=4x

Now,8x^3+1/x^3=(2x)^3+(1/x)^3
=(2x+1/x)(4x^2+1/x^2-2)
=(2x+1/x))((2x+1/x)^2-2-2)
=(2x^2+1)/x * [((2x^2+1)/x)^2-4]
=4x/x *[16-4]
=48.....
Please tell agar i missed something....
4630
Salma has a piece of land which is in the shape of a rhombus. She wants her one daughter and one son to work on the land and produce different crops. She divided the land in two equal parts. If the perimeter of the land is 400m and one of the diagonals is 160m, how much area will each of them get for their crop?
  • 4800 sq m
  • 9600 sq m
  • 2800 sq m
  • None of these
4631
@harshgupta88 said:
@JS-M lagey rahi fir se karo...
...40
4632
to everyone solving x + 1/x = 1 questions (there are two recent ones, one of them had been corrected but the other is still going strong), as it had been rightly pointed out by some, this equation is not correct

x^3+1 = 0 equation a rahi hai kuch kuch funde laga ke, but x^2 - x + 1 = 0 ka koi real solution nahin hai since Determinant is less than 0.
4633
@watsnew24 bhak kar di mistake 40 hi hai...hahah sry :D
4634

This was a question on the Prepathon. Is there any easier way than using the formula of calculating the area of the triangle from three sides using the formula sq.root(s(s-a)s-b)s-c)) ?

4635
@sutia said:
Best option join IIM trichy
plus.google.com/10996366050346... follow this page to know more
Bhai yaha sab MBA ke maare hai. :)

4636

questions imaginary values pe based bhi aa sakte hain isliye x+1/x=1 ko galat nhi keh sakte

4637
@VK_Shukla said:
x+1/2x=2 means 2x^2+1=4x
Now,8x^3+1/x^3=(2x)^3+(1/x)^3
=(2x+1/x)(4x^2+1/x^2-2)
=(2x+1/x))((2x+1/x)^2-4-2)
=(2x^2+1)/x * [((2x^2+1)/x)^2-6]
=4x/x *[16-6]
=40.....
Please tell agar i missed something....
Sorry I got the error .....answer will be 40..
4638
@watsnew24 bhai jara approch th bata do uski :P
4639

@sgchad said:
Salma has a piece of land which is in the shape of a rhombus. She wants her one daughter and one son to work on the land and produce different crops. She divided the land in two equal parts. If the perimeter of the land is 400m and one of the diagonals is 160m, how much area will each of them get for their crop?
4800
4641
@harshgupta88 said: @watsnew24 bhai jara approch th bata do uski


bhai double karo aur cube karo

agar fir bhi faso to banda hasil hai

P.S. double both RHS & LHS done that mistake only at first jab hawa me answer diya tha.....
4643

Salma has a piece of land which is in the shape of a rhombus. She wants her one daughter and one son to work on the land and produce different crops. She divided the land in two equal parts. If the perimeter of the land is 400m and one of the diagonals is 160m, how much area will each of them get for their crop



sorry bhai reply nahi post ho raha ans is 4800sq m

4644

4800

4645
if x= -1;
how can x+(1/x) =1 ??

no one can cheat maths or vice versa...check the authenticity of ques/ans
4646
@sgchad said: This was a question on the Prepathon. Is there any easier way than using the formula of calculating the area of the triangle from three sides using the formula sq.root(s(s-a)s-b)s-c)) ?
yr hero se easy kya hoga........(16 , 10 ,10) side le lo....baad me 100 se multiply kar dena
4647
@pathakrahul said: Salma has a piece of land which is in the shape of a rhombus. She wants her one daughter and one son to work on the land and produce different crops. She divided the land in two equal parts. If the perimeter of the land is 400m and one of the diagonals is 160m, how much area will each of them get for their cropsorry bhai reply nahi post ho raha ans is 4800sq m


aa gaya ans bhai......
4648
@sgchad said:
Salma has a piece of land which is in the shape of a rhombus. She wants her one daughter and one son to work on the land and produce different crops. She divided the land in two equal parts. If the perimeter of the land is 400m and one of the diagonals is 160m, how much area will each of them get for their crop?
  • answer is 9600/2=4800 4800 sq m
  • 9600 sq m
  • 2800 sq m
  • None of these
4649

@truly.gone said: bhai how to submit bug report????
@sampras
e truly ..e truly. etruly....e truly..............e truly...............etruly...........etruly.....kabho ayebe ki naahi............
4650
@sanju2012 said: if x= -1;
how can x+(1/x) =1 ??
no one can cheat maths or vice versa...check the authenticity of ques/ans
.........are yr x^3-1 has no real roots....to x = -1 ka sawaal hi nahi