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:

all the quant enthusiasts

please continue here.

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

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

**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

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

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 take

**27**

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

**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

sorry for repost but i think its worthy of a shot

**All the quant enthusiasts**

please continue here.

please continue here.

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

**MODS plz close this thread**

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?**

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)**

anujgupta21 Sayskindly 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