Official Quant thread for CAT 2013

how is arun sharma's and Ravi Handa's online course?

Please find ahead the attached question

ways to color a cube with 4 colors??

A boat goes 30 km upstream and 44 km downstream in 10 hours. In 13 hours, it can go 40 km upstream and 55 km downstream. The speed of the boat in still water is:

  • 3 kmph
  • none
  • 8 kmph
  • 4 kmph

0 voters

any faster approach ?

CAT Problems 1998-2006 Geometry and mensurations 👍

2 tiles each 2*1 m...on one we have to write "C" in form of a semicircle and on other we have to write T ....width of each alphabet is 0.5m . find the cost of painting when the cost is rs 3/cm^2.
720 , 7200, 72000,720000

Let there be n balls with Ram. he decides to colour one ball with colour 1, two balls with colour 2 and so on upto, fifty balls with colour 50. At the end of it , all n balls are used, and no ball is coloured twice. Ram then draws balls from the lot at random, without replacement. What is is the minimum number of balls that he must draw in order to guarantee drawing 10 balls of the same color?

Hi can anyone please share a comprehensive note or PDF on functions. Every where in my notes or online material the information is available in bits and pieces none of them explain from basics. Would be really glad if anyone can share it thanks

Four friends start from four towns, which are at the four corners of an imaginary rectangle. They meet at a point which falls inside the rectangle, after travelling distances of 40, 50 and 60 metres. The maximum distance that the fourth could have traveled is (approximately) ….

(a) 67 metres

(b) 52 metres

(c) 22. 5 metres

(d) Cannot be determined


koi solution batao bhai .

@Dexian @sagarcat @salil_pthk
answer the question i enclosed within this post...and please explain as well?

N = 7777………………7777, where the digit 7 repeats itself 429 times. What is the remainder left when N is divided by 1144?

solve this one @piyush4u @sagarcat @the-INVINCIBLE @kuljeet01 @ScareCrow28 @scrabbler @mo_cuishle
and explain 😃
options: a. -2+root(3)
b. -1+root(3)
c. 1+root(3)
d. 2+root(3)

what is the region of |x| + | x+ y| = 4 ....

...

😠

solve for x ,log (x+1) / log (2x-1)

  • Null set
  • x < =4
  • (3/2,2) U [4,infinity)
  • (3/2,2) U (2,4}

0 voters

Neeraj has agreed to mow a lawn, which is a 20 m × 40 m rectangle. He mows it with 1 m wide strip. If Neeraj starts at one corner and mows around the lawn toward the center, about how many times would he go round before he has mowed half the lawn?

a2.5

b3.5

c3.8

d4



The nth element of a series is represented as Xn = (-1)nXn - 1 If X0 = x and x > 0, then which of the following is always true?

aXn is positive if n is even

bXn is positive if n is odd

cXn is negative if n is even

dNone of these


minimum value of y if y = lx-2l - l2x-12l + lx-8l what is the correct approach for this kind of problems?

  • 6
  • 2
  • -2
  • none

0 voters

A container is filled up to half of its total volume with liquids L1 and L2 in the ratio 3 : 7. L1 and L2 evaporate at the rate of 25 litre/hr and 20 litre/hr respectively. After an hour the container is filled completely by adding another mixture which contains L1 and L2 in the ratio 2 : 3. The final ratio of L1 and L2 in the container becomes 1 : 2. What is the volume (in litres) of the container?

easy one

|x+y| + |x-y| = 4

Find the area under the curve?