Official Quant thread for CAT 2013

MBA CAT 2022
3041
@Messy_19 said:
Yep, radius imaginary aa raha hai!and OA for the DS question is USING BOTH statements,,,
y both/?? 😲
3042
@Messy_19 Train A is fast if you combine both the statements.
3043
@Messy_19 said:
Yep, radius imaginary aa raha hai!and OA for the DS question is USING BOTH statements,,,
Why both??
3044
@soumitrabengeri said:
Why both??
if train B length is less than platform length than. train A is fast.
and vice versa.

so need to statement II to confirm... check. with values.
3045
@Brooklyn said:y both/??@soumitrabengeri said:Why both??
@gs4890 said:
can be answered by using a alone ?


@Torque024 said:
Only I sufficient. Only II insufficient
3046
@maddy2807 said:
if train B length is less than platform length than. train A is fast.and vice versa.so need to statement II to confirm... check. with values.
Got it..thanks
3047
@maddy2807 said:
if train B length is less than platform length than. train A is fast.and vice versa.so need to statement II to confirm... check. with values.
yar let lengt of train b=ltrain a=2l

let tym taken by b= x

tym taken by A=1.5x
sp of B=l/x


sp of A=2l/1.5x =(4/3)spB !!!
3048
A square is inscribed in the triangle. One side of the square lies on the longest side of the triangle. The other two vertices of the square touch the two shorter sides of the triangle. What is the length of the side of the square? A triangle has sides 10, 17, and 21.
3049
@Brooklyn said:
yar let lengt of train b=ltrain a=2llet tym taken by b= xtym taken by A=1.5xsp of B=l/xsp of A=2l/1.5x =(4/3)spB !!!
We also have to consider the length of the platform.
3050
@Brooklyn said:
yar let lengt of train b=ltrain a=2llet tym taken by b= xtym taken by A=1.5xsp of B=l/xsp of A=2l/1.5x =(4/3)spB !!!

But the comparison is with respect to Platform Not Pole.
two cases....

Case I:
Train B=100
Train A=200
Platform = 50
Time B= 100
Time A= 150

A speed= 250/150=1.66
B speed= 150/100=1.5

Case II:
Train B=100
Train A=200
Platform = 150
Time B= 100
Time A= 150
A speed= 350/150=2.33
B speed= 250/100=2.5

see the difference

3051
@Torque024 thode variable de dete to thodi asani hoti bro
3052
@maddy2807 mene bhi aise burte force technique se kia. Ye sabse sahi hota h 😁
3053
@AIM_IIM_2013 said:
@Torque024 thode variable de dete to thodi asani hoti bro
Question edited.
3054
Define a "good word" as a sequence of letters that consists only of the letters A , B, and C - some of these letters may not appear in the sequence - and in which A is never immediately followed by B, B is never immediately followed by C, and C is never immediately followed by A. How many seven-letter good words are there?
3055
@Torque024 said:
A square is inscribed in the triangle. One side of the square lies on the longest side of the triangle. The other two vertices of the square touch the two shorter sides of the triangle. What is the length of the side of the square? A triangle has sides 10, 17, and 21.
4rt(3) ?
3056
@grkkrg said:
Define a "good word" as a sequence of letters that consists only of the letters A http://www.artofproblemsolving.com/Forum/code.php?hash=6dcd4ce23d88e2ee9568ba546c007c63d9131c1b&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb, Bhttp://www.artofproblemsolving.com/Forum/code.php?hash=ae4f281df5a5d0ff3cad6371f76d5c29b6d953ec&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb, and Chttp://www.artofproblemsolving.com/Forum/code.php?hash=32096c2e0eff33d844ee6d675407ace18289357d&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb - some of these letters may not appear in the sequence - and in which A is never immediately followed by B, Bhttp://www.artofproblemsolving.com/Forum/code.php?hash=ae4f281df5a5d0ff3cad6371f76d5c29b6d953ec&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb is never immediately followed by C, and Chttp://www.artofproblemsolving.com/Forum/code.php?hash=32096c2e0eff33d844ee6d675407ace18289357d&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb is never immediately followed by Ahttp://www.artofproblemsolving.com/Forum/code.php?hash=6dcd4ce23d88e2ee9568ba546c007c63d9131c1b&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb. How many seven-letter good words are there?
3*2^6 ?
3057
@soumitrabengeri said:
3*2^6 ?
can u explain d q !! i didnt get it :/
3058
@soumitrabengeri said:
3*2^6 ?
samjha yaar... sab upar se gaya
3059
@grkkrg said:
Define a "good word" as a sequence of letters that consists only of the letters A http://www.artofproblemsolving.com/Forum/code.php?hash=6dcd4ce23d88e2ee9568ba546c007c63d9131c1b&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb, Bhttp://www.artofproblemsolving.com/Forum/code.php?hash=ae4f281df5a5d0ff3cad6371f76d5c29b6d953ec&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb, and Chttp://www.artofproblemsolving.com/Forum/code.php?hash=32096c2e0eff33d844ee6d675407ace18289357d&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb - some of these letters may not appear in the sequence - and in which A is never immediately followed by B, Bhttp://www.artofproblemsolving.com/Forum/code.php?hash=ae4f281df5a5d0ff3cad6371f76d5c29b6d953ec&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb is never immediately followed by C, and Chttp://www.artofproblemsolving.com/Forum/code.php?hash=32096c2e0eff33d844ee6d675407ace18289357d&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb is never immediately followed by Ahttp://www.artofproblemsolving.com/Forum/code.php?hash=6dcd4ce23d88e2ee9568ba546c007c63d9131c1b&sid;=fcd75c7b4b97dc6ca929dda71fe10ceb. How many seven-letter good words are there?
What's OA??
3^7-(3^5*6+3^5*6-3^4*5)?
3060
@maddy2807 said:
4rt(3) ?
168/29