Official Quant thread for CAT 2013

MBA CAT 2024
35205

Hey guys, IIFT notification is out. If you didn't know, here is the link


kkcat s post in IIFT [ 2014 -2016] notification...
Pagalguy
Hey everyone..IIFT has come out with its notification..Its time to go all guns blazing...For preparations, mocks are always useful..TestFunda has a set of 6 IIFT mocks for this year..They are quite cheap already.. 500 for 6 papers...Lets bring it down a litle further..Groups of 8 or more can avai...





35206
Out of 100 students in a class , the number of students passing a final exam of Physics,Chemistry,Mathematics,English and Economics is 60,70,80,90,100 respectively.Furthermore it is known that exactly 10 students passed in all the papers.What is the maximum number of students who could have passed in at least 4 papers?? :banghead:
NO OA

35207

The sum of a certain number and its square root is 90.find the number?

35208

In a given fraction,if the numerator is multiplied by 3 and the denominator is reduced by 5,we get 3/2 but if the numerator is given fraction is reduced by 2/3 and the denominator is increased by 7,we get 1/10.find the fraction.

35209

The arithmetic mean of a set of n numbers was calculated wrongly as 20, since the digits of one of the numbers, which happened to be a two-digit natural number, were interchanged. When calculated after the correction, the mean was found to be 26. How many values are possible for n ?
explanation please.

  • 4
  • 12
  • 6
  • 9

0 voters

35210
@hexagon 👍 -
35211

Is there any shortcut to find coefficients of any power of x in the equation :(x-1)(x-3)(x-5).....(x-33)

ex. how to find the coefficient of x^15 in (x-1)(x-3)(x-5).............(x-33).

Kindly share the approach.

35212

1>

XYZ rolls a 6-sided dice six times. How many ways can she roll the dice so that the sum of her numbers is 10?



2>

Four die are randomly thrown. In how many ways sum can be 20 ?
35213

What is the thousands digit of (1!*2!*3!*4!*5!*6!*7!) ?

35214

sol plz

35215

sol ?

35216

sol plz

35217

geometry problem


35218

question on progressions

35219

A, B, C and D are weighed one after the other in the same order. Each time an item is weighed, average weight is recalculated. If the average weights so calculated are in an AP with a common difference of 3 kg, then:

Direction:

Question:

What is the minimum weight of D? If all the weights are natural numbers.

35220

Find 28383rd term of the series 123456789101112......


3. 4. 9. 7. Explain the solution please..
35221

Hi, please help with this question:


The number, one less than 7^19 is divisible by
(A) 49
(B) 7
(C) 16
(D) 18
(E) 6

Thanks! !
35222

there r 3 classes having 20, 25, 30 students respectively havin avg marks in in exam as 20, 25 and 30 resp. if 3 classes r represntd by A, B & C and folling inf abt 3 classes r avail:-

A -------- highst score 22 and lowest score 18
B -------- highst 31 and lwst 23
C -------- highst 33 and lwst 26
now 5 stdnts r transfrrd frm C to B, frthr, 5 more r transfrd from B to A, then 5 r transfrd frm A to B and finaly, 5 more r transfrd from B to C, then..

1. the minimum possible avg of B aftr this set of operation.?
2. If we set the highst possible avg of Class C as primry objecive and wnt to achiev highst possbl value for class B as secndry objective, what is the max value of class B's avg that is attainable.?
35223

The real number K for which the equation 2x^3+3x+k =0 has 2 distinct real roots in (0,1)

1. between 2 and 3
2. between -1 and 0
3. doesn't exist.
4. between 1 and 2

Is it doesn't exist?? 😲

Please explain your answer in detail , if somebody knows sigh -change rule please explain it .

35224

Hi ,

Please help me with this question..
Find the hundredth digit of ((5^5)^6)^7.?