[Official] Quant Thread for 2015!


How many zeroes in (540!)/(270!^2)


1!+3!+5!+7!+.....+101! ?...he how to find sum of consecutive odd or even integers?

two candles of same height are lighted at the same time. the first is consumed in 8 hrs and second in 6 hrs. assuming that each candles burns at constant rate, in how many hrs after being lighted the ratio between first and second candles becomes 2 : 1.?

pls provide detailed approach.....

How to do this ?

X^2-36x+128=0
X^2-px+128=0 find p such that both equation roots are in gp .?


Any idea on which PDP program is the most comprehensive among these three - CLs,IMS or Backspace(in Kolkata) ?

P.S  I will take down this post if its against the forum guideline.

A ball rolls on the floor of a rectangular room of base 10m * 7m. It deflects after hitting the wall of the room.The ball starts rolling from one corner of the room and moves at an angle of 45degree towards the opposite side of the room.Everytime after hitting, it gets deflected such that its line of travel is perpendicular to its privious path.Find, after how many minimum deflections, it will reach any corner of the roo

After what time will the two persons Tez and Gati meet while moving around the circular track? Both of them start at the same point and at the same time. 

  1. Tez moves at a constant speed of 5 m/s, while Gati starts at a speed of 2 m/s and increases his speed by 0.5 m/s at the end of every second thereafter.
  2. Gati can complete one entire lap in exactly 10 s. (Mention the Approach )

what would you guys suggest for GDPI prep in Bangalore? 

A multiple choice ques paper contains 4 questions each having 3 internal choices. If a person answers the entire paper randomely, what is the probabilitiy that he answers all the questions correctly??? A) 1/4 B) 1/81 C) 4/81 D)3/4 Pls help. Also mention approach

how to solve double lieup distribution

Find the HCF of

(2^315-1) and (2^25-1)

Specifically how to rule out the NONE option??                                                                       

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what percentile can be expected at the raw score of 130 in cat 15? can i atl east hope 95+

A takes 6 days less than B to do a certain job and 2 days more than C. Aand B together can do a work in the same time as C. In how many days B alone can do the complete work ?

PLease can someone do this with efficiency method !!

http://s1.postimg.org/p86hoj3jj/screenshot_906.jpg
OA : 1:1:2. Someone please explain

A sprinter starts running on a circular path of radius r metres. Her average speed (in metres/minute) is πr during the first 30 seconds, πr/2 during next one minute, πr/4 during next 2 minutes, πr/8 during next 4 minutes, and so on. What is the ratio of the time taken for the nth round to that for the previous round?

Meghana and Deepti run in opposite directions from a point P on a circle with different but constant speeds. Meghana runs in the clockwise direction. They meet for the first time at a distance of 900 m in the clockwise direction from P and for the second time at a distance of 800 m in the anticlockwise direction from P. If Deepti is yet to complete 1 round, then the circumference of the circle is

(a) 1200m              (b) 1250 m             (c) 1300m               (d) 1700m

XAT admit cards are out.

anyone from Delhi willing to share/sell his/her coaching material(Time/Cl) etc?

find the sum of all possible values of x such that 2/rt x+1/rt y =1/rt2 ?

Approach!