Official Quant thread for CAT 2013

7+3+2=12

root62
x,y,z positive toh both of them are necessary ?
@Torque024 bhai in question mein value rakhke dekh
x=5 rak toh -2 ayega and 3 rakhe toh 2 ayega toh range yahi hogi ..................koi bhi valu rakh ke dekh inke bich mein hoga

Find the value of x in (x+2 (x+2 (x+2 (3x)^1/2)^1/2)^1/2)^1/2 = x.


a)1 b)3 c) 6 d)12 e) 9

(Attached the Question screenshot). Please Prvoide the Solution
@bullseyes said:
The distance of point P(x,y,z) from the origin is sqrt(62) units, then find the coordinates of point P.X: x+y+z=12Y: x,y, and z are positive integers.A) can be answered by A aloneB) by B aloneC) by either of statementD) by noneE) by using both

x^2+y^2+z^2 =62 only possible for 1,5,6 for x,y,z there will be combinations of values
D) by none
@padmanabhan1989 bhai 3 ???
@bullseyes said:
The distance of point P(x,y,z) from the origin is sqrt(62) units, then find the coordinates of point P.X: x+y+z=12Y: x,y, and z are positive integers.A) can be answered by A aloneB) by B aloneC) by either of statementD) by noneE) by using both
Moreover point can lie in a sphere, so none will be correct.
@Torque024 bhai distance formula laga mil jayega answere
@padmanabhan1989 said:
Find the value of x in(x+2 (x+2 (x+2 (3x)^1/2)^1/2)^1/2)^1/2 = x.a)1 b)3 c) 6 d)12 e) 9(Attached the Question screenshot). Please Prvoide the Solution
3
@sauravd2001 said:
@padmanabhan1989 bhai 3 ???
Bhai lagakar ye aa gaya tha x^2+y^2+z^2 =62 only possible for 1,5,6 ismai bhi to combinations ban jayenge x,y,z ke so none hi hoga kyu?
@Torque024 toh yahi toh kah rahe hain !!positive number ho milke 12 bana rah ehain and inka sum 12 hai aur inka disance bhi root 62 ata hai
@sauravd2001 said:
@Torque024 toh yahi toh kah rahe hain !!positive number ho milke 12 bana rah ehain and inka sum 12 hai aur inka disance bhi root 62 ata hai
Han to aapka ans kya hai? both required?
@sauravd2001

Distinct point puchca hai...you can arrange 7 3 and 2 in 6 ways.Hence no distinct point.

A can give B a headstart of 60m and C aheadstart of 90m in a 1 km race. How many metres of headstart can B give C in the same race so that they finish the race at the same time ?


Approach please !
@krum explain ur answer pls
@SufyS said:
A can give B a headstart of 60m and C aheadstart of 90m in a 1 km race. How many metres of headstart can B give C in the same race so that they finish the race at the same time ?Approach please !
1000/A=940/B
1000/A=910/C

=>940/B=910/C

=>1000/B=1000*910/940*C=968/C

32 m
@padmanabhan1989 said:
@krum explain ur answer pls
yaar since R.H.S is an integer, sqrt(3x) has to be an integer, so check 12 and 3 , 12 fails after 2nd step.
Don't have the correct way to solve but to try the options.
@SufyS bhai answere kya kuch 32.32?
@krum perfect ... made a silly petty mistake
@krum said:
yaar since R.H.S is an integer, sqrt(3x) has to be an integer, so check 12 and 3 , 12 fails after 2nd step.Don't have the correct way to solve but to try the options.
Thanks buddy..
@mohnish_khiani bhai distinct poitn kahin ni likha n agar likha hai toh mujhe jara woh wala ek baar message send kar diyo kyunki mera pc bahut slow hai bina pitai ke chalta ni hai aur diwali wale din main ise pitna nai chahta nyways happy diwali