Official Quant thread for CAT 2013

MBA CAT 2024
23507
@scrabbler
can the rank of SIACHN be in 600........
my logic is that it starts wid S ........... so falls in the last 120 of 720 words..........
23508
@Bigshu said:
@scrabbler and at -2 as well the reason being both are critical pointsBut is k=2 possible???
But -2 is not a minimum of the combined curve na? 1/2 is. Both are inflection points, but from -2 it still keeps going downward. So there will be another value which has the same result as -2 does.

regards
scrabbler
23509
@Dexian said:
@scrabblercan the rank of SIACHN be in 600........my logic is that it starts wid S ........... so falls in the last 120 of 720 words..........
Vowels together...so total cases only is 2! * 5! = 240.

regards
scrabbler
23510
@Dexian said:
A student selects all rearrangements of the letters of the word SACHIN in which the vowels appear together. These words are then arranged in alphabetical order. What is the rank of SIACHN in this game?1. 6492. 2153. 2114. 193PS i dont know the OA...
yaar mera 673 aa raha hai...and i am quite certain of it in a way...
23511
@Logrhythm said:
yaar mera 673 aa raha hai...and i am quite certain of it in a way...
Question says "all rearrangements of the letters of the word SACHIN in which the vowels appear together". 673 to hai hi nahin aise :(

regards
scrabbler
23512
@Logrhythm said:
yaar mera 673 aa raha hai...and i am quite certain of it in a way...
bhai vowels saath wale only need to be counted...
23513
@scrabbler said:
Question says "all rearrangements of the letters of the word SACHIN in which the vowels appear together". 673 to hai hi nahin aise regardsscrabbler
@ankitmishraiim said:
bhai vowels saath wale only need to be counted...
ohh...fir nahi aata mujhe ye question...
23514
AI C H N S : 5!
C H IA N S : 4!
H ..............: 4!
IA............:4!
N.............:4!
S C H IA N :3!
S H C H N:3!
S IA C H N:1
TOTAL: 120+96+12+1=229
23515
@scrabbler said:
Vowels together...so total cases only is 2! * 5! = 240.regardsscrabbler
see what my approach is..

AI _ _ _ _ = 4!
_ AI _ _ _ _ = 4!
_ _ AI _ _ = 4!
_ _ _ AI _ =4!
_ _ _ _ AI = 4!

IA _ _ _ _ = 4!
C I A _ _ _ = 3!
H I A _ _ _ = 3!
N I A _ _ _ = 3!
S I A C H N = 1

24*6 + 6*3 + 1 = 163...
23516
@scrabbler sorry missed that point thanks

23517
@ankitmishraiim said:
see what my approach is..AI _ _ _ _ = 4!_ AI _ _ _ _ = 4!_ _ AI _ _ = 4!_ _ _ AI _ =4!_ _ _ _ AI = 4!IA _ _ _ _ = 4!C I A _ _ _ = 3!H I A _ _ _ = 3!N I A _ _ _ = 3!S I A C H N = 124*6 + 6*3 + 1 = 163...
Why should all the AI waale be earlier?

For example the line I bolded above contains a case SNHAIC which is later than the required answer...

regards
scrabbler
23518
@ankitmishraiim said:
see what my approach is..AI _ _ _ _ = 4!_ AI _ _ _ _ = 4!_ _ AI _ _ = 4!_ _ _ AI _ =4!_ _ _ _ AI = 4!IA _ _ _ _ = 4!C I A _ _ _ = 3!H I A _ _ _ = 3!N I A _ _ _ = 3!S I A C H N = 124*6 + 6*3 + 1 = 163...
wen the case is IA:
then first word is
C H IA N S ............(IMO)

but u r reading it as
IA C H N S
23519
@scrabbler said:
Why should all the AI waale be earlier?For example the line I bolded above contains a case SNHAIC which is later than the required answer...regardsscrabbler
in that case to the first word bhi galat hua na...........
IA C H N S..........
23520
@Dexian said:
wen the case is IA:then first word is C H IA N S ............(IMO)but u r reading it as IA C H N S
and @scrabbler ---- can u both also share ur approach.. i am geting confused although i have seen my mistake.. but then how to approach.?
23521
@ankitmishraiim said:
and @scrabbler ---- can u both also share ur approach.. i am geting confused although i have seen my mistake.. but then how to approach.?
see my above post in this pase... i m nor sure though.........
23522
@Dexian said:
in that case to the first word bhi galat hua na...........IA C H N S..........
Haan.

Mera abhi bhi 223 aa raha hai 😲 Giving up.

regards
scrabbler
23523
@scrabbler said:
Haan.Mera abhi bhi 223 aa raha hai Giving up.regardsscrabbler
aap apna approach to batao plzz..........
23524
@ankitmishraiim said:
and @scrabbler ---- can u both also share ur approach.. i am geting confused although i have seen my mistake.. but then how to approach.?
Tried 2 ways. Doosra batata hoon, started from the last.

See AI together hai to 2! * 5! = 240 hai total.

Options are arranging AI C H N S or C H IA N S

Last cases will be starting with S N and will be 2 * 3! (arranging AI, C, H or IA, C, H)= 12 in number. These are numbers 229-240.

Before that will be cases staring with S IA. These will be 6 in number (arranging C, H, N) out of which the earliest is the one we want. These are numbers 223-228 and 223 is the one we want.

Now answer choice mein nahin hai. So next step

regards
scrabbler
23525
@scrabbler said:
Tried 2 ways. Doosra batata hoon, started from the last.See AI together hai to 2! * 5! = 240 hai total.Options are arranging AI C H N S or C H IA N SLast cases will be starting with S N and will be 2 * 3! (arranging AI, C, H or IA, C, H)= 12 in number. These are numbers 229-240.Before that will be cases staring with S IA. These will be 6 in number (arranging C, H, N) out of which the earliest is the one we want. These are numbers 223-228 and 223 is the one we want.Now answer choice mein nahin hai. So next step regardsscrabbler
S will start at 193.........
193 is S AI C H N
S AI .......... :6
S C .......... :6
S H ........... :6
S IA C H N :1 =211


is it ok??
23526

AI_ _ _ _= 4 !

C_ _ _ _ =4! * 2!
H_ _ _ _ =4! * 2!
IA_ _ _ _ =4!
N_ _ _ _ =4! * 2!
SAI _ _ _ =6
SIACHN = 1

My ans = 199