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official quant thread for CAT 2009
Quantitative Questions and Answers Discuss Quantitative and other Math related questions. Post your math doubts and get it solved by the smartest brains this side of the universe !

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MaskedMenace MaskedMenace is offline
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Re: official quant thread for CAT 2009 - 03-07-2009, 01:08 AM

Quote:
Originally Posted by arya5139 View Post
can u plz elaborate the line in bold?
I applied remainder theorem.
If ax^2 + bx + c is divided by (x-k) then remainder is f(k) = ak^2 + bk + c

If ax^2 + bx + c is divided by(x+K) then remainder is f(-k) = ak^2 - bk + c
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divishth divishth is offline
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Re: official quant thread for CAT 2009 - 03-07-2009, 01:15 AM

Wo Wo wo...i really did silly mistake.....sorry dude.....i got ur answer


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Re: official quant thread for CAT 2009 - 03-07-2009, 02:10 AM

guys my problem is that i cant identify sitters in the quant section as a result of which i waste a lot of time. help
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Re: official quant thread for CAT 2009 - 03-07-2009, 07:44 AM

Vineet attends an IPL game in Delhi and estimates that there are 50,000 fans in attendance. Rahul attends an IPL game in Bangalore and estimates that there are 60,000 fans in attendance. A league official who knows the actual numbers attending the two games note that:

i. The actual attendance in
Delhi is within10% of Vineet's estimate.
ii. Rahul's estimate is within 10%of the actual attendance in
Bangalore.

To the nearest 1,000, the largest possible difference between the numbers attending the two games is

(A) 10,000 (B) 11,000 (C) 20,000 (D) 21,000 (E) 22,000




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akhilmisra akhilmisra is offline
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Re: official quant thread for CAT 2009 - 03-07-2009, 08:27 AM

Quote:
Originally Posted by ankur123xyz View Post
Vineet attends an IPL game in Delhi and estimates that there are 50,000 fans in attendance. Rahul attends an IPL game in Bangalore and estimates that there are 60,000 fans in attendance. A league official who knows the actual numbers attending the two games note that:

i. The actual attendance in
Delhi is within10% of Vineet's estimate.
ii. Rahul's estimate is within 10%of the actual attendance in
Bangalore.

To the nearest 1,000, the largest possible difference between the numbers attending the two games is

(A) 10,000 (B) 11,000 (C) 20,000 (D) 21,000 (E) 22,000


my answer 21000

cheers....
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Re: official quant thread for CAT 2009 - 03-07-2009, 08:58 AM

I guess this is quite a simple question , but my answer doesnt match the one given... thats y...

A clock loses 10 mins every hour, it shows the correct time @ 1 a.m. on Sunday. When will it next show the correct time?

my Ans : 1 a.m. on Wednesday.
Ans given = 1 p.m. on Wednesday

whats the correct answer?
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dillipmina dillipmina is offline
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Re: official quant thread for CAT 2009 - 03-07-2009, 09:06 AM

Quote:
Originally Posted by pari16 View Post
I guess this is quite a simple question , but my answer doesnt match the one given... thats y...

A clock loses 10 mins every hour, it shows the correct time @ 1 a.m. on Sunday. When will it next show the correct time?

my Ans : 1 a.m. on Wednesday.
Ans given = 1 p.m. on Wednesday

whats the correct answer?
See,the clock loses 10 min ever hour.........So the next correct time will be shown when the clock loses 12 hrs......For the clock to lose 12 hrs,the time taken is 12*60/10=72 hours.........But it has alread lost 12 hours......So the actually 72+12=84 hrs have passed.......So the time is 1 pm on Wednesday..
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abhay15783 abhay15783 is offline
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Re: official quant thread for CAT 2009 - 03-07-2009, 09:11 AM

Quote:
Originally Posted by pari16 View Post
I guess this is quite a simple question , but my answer doesnt match the one given... thats y...

A clock loses 10 mins every hour, it shows the correct time @ 1 a.m. on Sunday. When will it next show the correct time?

my Ans : 1 a.m. on Wednesday.
Ans given = 1 p.m. on Wednesday

whats the correct answer?
Guess it will be 1 a.m. on wedn.


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dillipmina dillipmina is offline
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Re: official quant thread for CAT 2009 - 03-07-2009, 09:13 AM

Is there anything wrong in my explanation above??
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Re: official quant thread for CAT 2009 - 03-07-2009, 09:18 AM

Quote:
Originally Posted by ankur123xyz View Post
Vineet attends an IPL game in Delhi and estimates that there are 50,000 fans in attendance. Rahul attends an IPL game in Bangalore and estimates that there are 60,000 fans in attendance. A league official who knows the actual numbers attending the two games note that:

i. The actual attendance in Delhi is within10% of Vineet's estimate.
ii. Rahul's estimate is within 10%of the actual attendance in Bangalore.

To the nearest 1,000, the largest possible difference between the numbers attending the two games is

(A) 10,000 (B) 11,000 (C) 20,000 (D) 21,000 (E) 22,000


my ans is E)

50,000 -10% =45,000
and next 60,000 is 90% of total so total is 66600
therefore diff is 21600 =22000


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