Official Quant Thread for CAT 2012 [Part 1]

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Hi puys, CAT 2011 season is finally over :: :: Let start a new season of Quants thread for CAT 2012.. :: :: Here are few links of Quants thread for CAT 2011 season... Part-8 http://www.pagalguy.com/forum/quanti...at-...
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a train and car start at same time ...car at rear end reaches front end and come back to rear end . in the mean time train travels 1 km and speed of train is 1 km /hr ...wat is distance covered by car
:banghead:

hope for the best
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all the quant enthusiasts

please continue here.

http://www.pagalguy.com/discussions/official-quant-thread-for-cat-2012-part-2-25078107/3235962
mods plz close this thread

pls everyone, continue on the thread jain bhai opened (link -above). A thread needs to be closed when it has completed around 1000 pages.

Thanx.
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Getting 15000.

18k*10/12 = 15k.

=====================

Q) A credit card number has 6 digits (between 1 to 9). The first two digits are 12 in that order, the third digit is bigger than 6, the forth is divisible by 3 and the fifth digit is 3 times the sixth. How many different credit card numbers exist?


digits 1 2 3 4 5 & 6
numbers 1 2 ( 7,8,9) (3,6,9) (31,62,93)

Ans would be 3*3*3= 27.

Correct me if i am wrong
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Q) A credit card number has 6 digits (between 1 to 9). The first two digits are 12 in that order, the third digit is bigger than 6, the forth is divisible by 3 and the fifth digit is 3 times the sixth. How many different credit card numbers exist?


ans= 27
3rd digit could be 7,8 and 9
4th could be only 3,6,9
and 5 could be only 3, 6 and 9
and 6th digit be fixed according to 5th digit
so 3x3x3= 27

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Getting 15000.

18k*10/12 = 15k.

=====================

Q) A credit card number has 6 digits (between 1 to 9). The first two digits are 12 in that order, the third digit is bigger than 6, the forth is divisible by 3 and the fifth digit is 3 times the sixth. How many different credit card numbers exist?


my take27

third digit can take 3 values
4th digit can take 3,6,9 = 3 values
5th digit = 3 times 6th. 6th can take only 1,2,3 and corresponding three values for 5th digit
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Anjali nd Sachin decided to meet at Barista sometime between 5pm to 6 pm.they decided that they would wait max of 10 min their and then leave.What is the probability that they met?


sorry for repost but i think its worthy of a shot
xat (2013) 97.43:cat (2012) 95.03: calls:xlri(bm/hr)
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All the quant enthusiasts

please continue here.

http://www.pagalguy.com/discussions/official-quant-thread-for-cat-2012-part-2-25078107/3235962
MODS plz close this thread
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A truck having ten tyres travels from P to Q and then back to P. If there are 2 additional spare tyres and the distance between P and Q is 9000 kilometres (km), then the maximum distance travelled (in km) by any tyre is at least?
(1) 12000 (2) 18000 (3) 9000 (4) 16000 (5) 15000


Getting 15000.

18k*10/12 = 15k.

=====================

Q) A credit card number has 6 digits (between 1 to 9). The first two digits are 12 in that order, the third digit is bigger than 6, the forth is divisible by 3 and the fifth digit is 3 times the sixth. How many different credit card numbers exist?
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A 250 m long train is approaching an unmanned railway crossing. The train is
running at a uniform speed of 75 km/h and is 3 km away from the crossing. At the same instant, a scooter is also approaching the crossing and is 1300 m away from it. The scooter is moving at a uniform speed of A. In which of the following ranges, A exists such that the scooter would pass the crossing by just escaping the collision?
(1) 24km/h to 28 km/h
(2) 29km/h to 33km/h
(3) 35km/h to 40km/h
(4) 41km/h to 45km/h
(5) 45 km/h to 50km/h

(3/75)=(1.3/A)
=>A=32.5~33

(b)
Not all are Gifted! I am just destined!
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anujgupta21 Says
kindly solve this question...GUY!!!


bhai d ans is x-8
(kx-6)(x^2+2x-
=x^3-ax^2-bx+48
comparing a=4
putting a in d exp.
x^2-4x-32.
div by x-8
xat (2013) 97.43:cat (2012) 95.03: calls:xlri(bm/hr)
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