Official Quant thread for CAT 2013

MBA CAT 2024
18826
@Virinder said:
@iLoveTorres - Partly right...whats your approach btw?Still more prime no.s it'll be divisible by...
i read it on total gadha's number systems e-book. so i remember from there.
18827
@iLoveTorres - well i guess it is also divisible by 3
and 37 along with 7,11,13............
btw how is total gadha???
18828
@Virinder said:
@iLoveTorres - well i guess it is also divisible by 3 and 37 along with 7,11,13............btw how is total gadha???
bhai 3 is for sure. as it is effectively 6*x and this is divisible by 3.
18829

maybe you did not understand the question properly. Check again.


aaaaaa... 6n times is divisible by how many prime nos?

18830
@Virinder said:
maybe you did not understand the question properly. Check again.aaaaaa... 6n times is divisible by how many prime nos?
bhai options to do
18831

^ @iLoveTorres - dude how is total gadha????

fee and everything?
18832

a)3

b)4
c)5
d)6
18833
@Virinder : its gud bro ... 😃


18834
A number repeated 6n times is divisible b ATLEAST how many prime numbers???
AND HOW?

aaaaaa...6n times is divisible by how many prime nos?

a)3
b)4
c)5
d)6

18835
http://totalgadha.com/mod/forum/discuss.php?d=6582

http://totalgadha.com/mod/forum/discuss.php?d=4207

http://totalgadha.com/mod/forum/discuss.php?d=4405

my QA score is not possible .. i should say it is becoz of Total gadha free links and e books 😃 .. damn awesum
18836
@Virinder said:
A number repeated 6n times is divisible b ATLEAST how many prime numbers???AND HOW?aaaaaa...6n times is divisible by how many prime nos?a)3b)4c)5d)6
c?
18837
@Virinder : i think 5 = 3*7*11*13*37
18838

income:exp = 5:4
total income is 800 more den the total expanditure
den whats total income

3000
4000
5000
6000

18839
@ziddiarmaan

Approach???
18840
@Virinder said:
A number repeated 6n times is divisible b ATLEAST how many prime numbers???AND HOW?aaaaaa...6n times is divisible by how many prime nos?a)3b)4c)5d)6
N = 'a' (repeated 6k times)

N= 'aaaaaa'(repeated k times)

N = aaa(1001) repeated k times

N = a(111)(1001) repeated k times

N = a(3*37)(7*11*13) repeated k times

So we have atleast 5 primes, 3,7,11,13 and 37

@ziddiarmaan Pranam aapko bhi bhai!!
18841
@Cat.Aspirant123
bhai .. 4000
18842
@Angadbir
18843
@ziddiarmaan said:
@Cat.Aspirant123bhai .. 4000
haa...ab aa gaya.. 😁 thx
18844
@Angadbir \____O__//
bhai pranaam
18845
@saurabhlumarrai said:
Koi iska bhi jawab bta do...
ok refer the attachment for naming convention.

now x = radius of small circle.
a = radius of semi circle

So we can see the small right angle triangle

(a+x)^2 = (a-x)^2 + (a-x)^2
(a+x)/(a-x) = 2^1/2

x = (2^1/2 - 1)/(2^1/2+1)a
x = (2^1/2 - 1)^2/1 *a
x = 3 - 2*2^1/2*a

Now if we calculate the ratio the answer is "None of these"

Let me know if my approach is correct