[Official] Quant Thread for 2015!

1. Two friends, A and B, decided to meet at a certain time between 6 p.m and 7 p.m at a certain park. They agreed among themselves that each would wait for a maximum of 20 minutes for the other. Find the probability of both persons meeting between 6 p.m and 7 p.m at the park.

Please provide a detailed solution.

hi i am new here please help tell me how to prepare for cat

Which one is the best course material for cat preparation.Please give your valuable suggestion.

  • bullseye
  • t.i.m.e.
  • ims
  • cl
  • other
  • testfunda
  • oliveboard
  • cracku

0 voters

Which of the following is true? (How to do it quickly)

  • √11-√5<=(greater equal) √19-√15
  • √11-√5=√19-√15
  • √11-√5<√11-√15
  • √11-√5>√19-√15

0 voters

Iss desh ke graduates jab apne 9-5 job se bore hone lagte hain, to unhe bahar nikalne ke bas 3 raaste soojte hain - MBA, IAS, ya fir, Start up.. TVF Pitchers 😃 🙏 

Puys, I want to start with the sectional tests. Which ones shall I go for? CL IMS TIME??

Sum of first 10 terms of 2,22,222,2222,,,,,,,ans is 200(10^7-1)/81...any one kindly explain the approach

sum of 1/(2^2-1) + 1/(4^2-1) + 1/(6^2-1)+.........1/(20^2-1)

ans is none.......approach plz?

  • 9/10
  • none
  • 19/21
  • 10/11

0 voters

Mary and Joe are to throw three dice each. The score is the sum of points on all three dice. If Mary scores 10 in her attempt what is the probability that Joe will outscore Mary in his? Please share your approach .

Friends please tell me how to approach this type of problem and tell me how to solve this.


http://pho.to/9a2Br

Thanks

x+y+z=12 , where x,y,z can take values from (1,2,3,4,5,6,7). No of solution of eqtn ? ...Ans is 37 .Method ? 

I did ...(8-x')+(8-y')+(8-z')=12.....x'+y'+z'=12.....postive soln =>12-1C(3-1) ...after what v have to do ?

In an empty tank of height h, there are two pipes, A and B, attached at a height of h/2. If instead, both the pipes were attached at the bottom of the tank, then A would fill an empty tank in 4 hours and B would empty a full tank in 12 hours. If both taps are opened simultaneously, then in how much time will the empty tank get filled?

The volumes of two vessels, which are filled up to the brim by milk of different prices, are 220 L and 180 L. An equal amount of milk is taken out from each of the two vessels, and the milk taken out from the first vessel is poured into the second vessel while the milk taken out from the second vessel is poured into the first vessel. If the price per liter of milk in both the vessels becomes the same eventually, find the volume of milk taken out from each of the two vessels.

Please give me the answer with explanation .Giving answer without any explanation reduces the opportunity to learn from other prespectives.


Sarah and Neha start running simultaneously from the diametrically opposite ends of a circular track towards each other at 15km/h and 25km/h respectively. After every 10 minutes their speed reduces to half of their current speeds. If the length of the circular track is 1500 m, how many times will Sarah and Neha meet on the track?
(1) 6 (2) 9 (3) 11 (4) 7 (5) 8

CAT question of the day:

In a 4000 meter race around a circular stadium having a circumference of 1000 meters, the fastest runner and the slowest runner reach the same point at the end of the 5th minute, for the first time after the start of the race. All the runners have the same starting point and each runner maintains a uniform speed throughout the race. If the fastest runner runs at twice the speed of the slowest runner, what is the time taken by the fastest runner to finish the race?

A] 20 min
B] 15 min
C] 10 min
D] 5 min

sum of ....3/4 + 5/36 + 7/144 + 9/400..........+ 19/8100??

sum of: 3/4 + 5/36 + 7/324 + 9/2916 + .......

find the sum: 1/(3X7) + 1/(7X11) + 1/(11X15)+..........1/(35X39)

Find number of solutions : 

19x + 17y = 789 , x>0 , y>0

Is there any news about this year's cat date?? I read in an article that this year it will take place in October. If that's so, then I'm doomed big time... :(