Official Quant thread for CAT 2013

MBA CAT 2024
21867
@Pradeep_Rss
@iLoveTorres said:
i am getting an answer close to 36.. options would be helpful to decide the answer
i m getting 38.40.
although i have a feeling that 62.5Q% shld be 62.5% of Q%.. ..
i got Q as 60%
21868
@TootaHuaDil said:
exactly 9.6 ...can you post the snapshot?
Try this...

regards
scrabbler
21869
@ChirpiBird said:
@Pradeep_Rss i m getting 38.40.although i have a feeling that 62.5Q% shld be 62.5% of Q%.. .. i got Q as 60%
your answer is absolutely right :)
21870
@TootaHuaDil said:
In a circle of radius 5 cm, AB and AC are the two chords such that AB=AC= 6 cm. Find the length of the chord BC.
9.6 . ..
21871
@ChirpiBird said:
@Pradeep_Rss i m getting 38.40.although i have a feeling that 62.5Q% shld be 62.5% of Q%.. .. i got Q as 60%
but even 38.40 is close to 36 na.. i jus did a quick estimate that landed me with the approximation.. rest i was sure someone would do the tough part :P
21872
@iLoveTorres said:
but even 38.40 is close to 36 na.. i jus did a quick estimate that landed me with the approximation.. rest i was sure someone would do the tough part
koi nhi .. it's my pleasure being the "someone" ! :P
21873
@ChirpiBird said:
koi nhi .. it's my pleasure being the "someone" !
then its my pleasure in finding the approximate answer to the question and to leave the calculation to you :)
21874
@2013IsMine : Is the answer 0?
n^4-20n^2+4=(n-2)^2-(4n)^2
=>(n-2+4n)(n-2-4n)
Since the expression is prime... One of the factors is 1.
=>n-2-4n=1
=>n-4n-3=0
If there is some problem with the solution, please help.
21875
@TootaHuaDil said:
In a circle of radius 5 cm, AB and AC are the two chords such that AB=AC= 6 cm. Find the length of the chord BC.
Is it 9.6
21876
@Pradeep_Rss said:
A shopkeeper makes a profit of Q% by selling an object for rs.24/-. Had the cost price and selling price been interchanged ,it would have led to a loss of 62.5Q%.With the latter cost price , what would be the new selling price to get a profit of Q%?
38.40
21877
There is a cube of dimensions: 6*6*6 placed in a corner in a room.FInd no of cubelets required to cover the cube completely.
21878
@scrabbler said:
Try this...regardsscrabbler
21879
@sonamaries7 said:
There is a cube of dimensions: 6*6*6 placed along in a corner in a room.FInd no of cubelets required to cover the cube completely.
134 hai kya??
21880
@saurav205 said:
134 hai kya??
approach?
21881
@iLoveTorres said:
20?
@iLoveTorres :ans is 20
21882
@sonamaries7 said:
approach?
M not very sure....it can be 127 also..kahin galti kiya hai...
But approach is :
on one side a square of 7*7 will cover one side completely....the adjacent side will then have 7*6 to cover that side completely...and finally the top side can have 6*6 (as a lid) to cover it..
so total should come t 127...
21883
@TootaHuaDil said:
In a circle of radius 5 cm, AB and AC are the two chords such that AB=AC= 6 cm. Find the length of the chord BC.
9.6 ?
21884
@CrookDinu said:
@iLoveTorres :ans is 20
bhai kyun taang khich rahe ho.. sabko 10 aa raha hai aur tum bol rahe ho ki 20 answer hai
21885
@sonamaries7 said:
There is a cube of dimensions: 6*6*6 placed in a corner in a room.FInd no of cubelets required to cover the cube completely.
127 ?

36*3 + 3*6 + 1 = 127..
21886
@saurav205 said:
M not very sure....it can be 127 also..kahin galti kiya hai...But approach is :on one side a square of 7*7 will cover one side completely....the adjacent side will then have 7*6 to cover that side completely...and finally the top side can have 6*6 (as a lid) to cover it..so total should come t 127...
Or, 7^3 - 6^3 fits your description :)

regards
scrabbler