xat 2015 quant thread

Lets not forget that xat Quant's isnot easy and we can't afford to stop practising. So let's get down to solving some sums!!!

Hi guys... @rafaelnadal @@pulkit_malik @harshcat91....

Question 

Remainder when 17^13 - 13^17 is divided by 30..

Lets begin..

@darchangel @rafaelnadal 

Sum 1+1/2 + 1/3 + 1/4 + 1/5 + 1/6 + 1/8 + 1/9 +1/12 +.... ?

A. 3 B. 3.25 C. 3.5 D. 4 

@rafaelnadal @bindukalisetty @darchangel 

Here's anther question i liked.

Co-odinates of vertices of triangle ABC r (0,0) (6,0) (0,4). probability of point selected inside triangle having x coordinate less than y is  ?

have a read at this

http://www.pagalguy.com/discussions/cat-2014-sunday-16th-november-2014-day-1-exam-experience-3006582...

In quad ABCD, BC=10 CD=14, AD=12 & angle CBA = BAD = 60. if AB = a+rtb where a nd b are positive integers, find the value of A+B ?

I AM NOT THE QUIZ MASTER HERE. KINDLY POST QUESTIONS FOR MY PLEASURES TOO. DONT BE SELFISH !!

Two numbers 297(base b) and 792 (baseb) are defined in base system b. If 1st number is factor of 2nd number. Value of B is 1)11 b) 12 c) 17 d) 15 e) 19

Sum of numbers from 1 to 100 which r not divisible by 3 & 5 is ?

The first negative term of the expansion rt ((1 +2x)^7) is the ______ term

4 , 6 , 5 , 7

2 sqrs s1 & s2. S1 is inscribed in s2 such thateach corner of s1 lies on sides of s2 and divides its sides into 2 segments a & b such that b>aa. What can be possible value of b/a. 1) > 5 & 8 & and =14 and 17

For how many itegers value of m, 10

number of solutions of mod([x] - 2x) = 4 where [] is GIF


A spherical balloon is inflated and its radius is increasing at 4 cm/second. At what rate would the volume be increasing when its radius is 14cm?  

  • (1) ? (56)3 cm3/sec
  • (2) 9856 cm3/sec
  • (3) 10,000cm3 /sec (
    1. None of these

0 voters

mean of six positive integers is 15, median is 18, and the only mode of the integers is less than 18. the maximum possible value of largest of six integers is...

Concept/Quadratic Eqn shortcut:
In questions like:
X= √ (n + √ (n - √ (n + √ (n - √ (n + ......... Find X?

No need to form quadratic and then solving....Direct formulaes:

1) If +,-,+,- alternating under root, formula= [root(4n-3)+1]/2

2)If -.+,-,+ alternating under root, formula = [root(4n-3)-1]/2

3)If normal +,+,+,+ under root, formula = Just write n=k(k+1) i.e. product of two consecutive positive integers and then the answer would be (k+1)

Example :X= √ (30 + √ (30 + √ (30 + √ (30 + √ (30 +.....Write 30= 5 * 6Here k+1 is 6 Hence answer would be 6.

4) If normal -,-,-,- under root, formula = Just write n=k(k+1) i.e. product of two consecutive positive integers and then the answer would be (k)Example :X= √ (30 - √ (30 - √ (30 - √ (30 - √ (30 -.....Write 30= 5 * 6

Here k is 5 Hence answer would be 5.

P.S. : If number is not in the form of 2*(triangular number) i.e. not in the form so that we can express it as a product of two consecutive natural numbers, then we have to go with the normal method.

x, 17, 3x - y^2- 2, and 3x + y^2- 30, are four consecutive terms of an increasing arithmetic sequence. 
The sum of the four numbers is divisible by: 

wtf!! Does GK in XAT has a sectional cut-off ??

Would anyone recommend HandaKaFunda GK Course for XAT ? (or any other)

I mean I know GK doesn;t have a course but it surely has a specific pool of areas from which Q are asked. This is coming from a guy who cleared IIFT all cut offs and got 0 in Gk lol. Need suggestions !!