Dr Raju's Institute of Graduate Studies Abroad

[GREquant800]

Quant:

1. Given the median of a series of seven consecutive numbers as ‘a+2’, find the mode of the series?
A. a
B. a + 2
C. a - 2
D. 2a + 2
(Similar)


2. Col A: (78*79*80*81)^1/2
Col B: 6400


3. Given that t^2 - ty < 0
Col A: t
Col B: y


4.

If the radius of the larger circle is ‘r’, then find the area of the unshaded region?
(Similar to this)


5. Given a list of numbers 11, 12, 13, 14 & 15. Of the following options given, in which of the operations the mean changes and standard deviation remain same?
A. Adding 20 to the list
B. Adding 20 instead of 15
C. Adding 13 to the list
D. Adding 3 to each number in list
E. Multiplying 3 to each number in list
(Similar to this)


6. Given a series 5, 15, 45…………….. Find the value of a6 term?
Note: Here 6 is suffix
(Similar to this)


7. Given the length, breadth and height of a cuboid as 6, 1/3 and 1/2. Find the surface area of cuboid?
(Similar to this)


8. When ‘k’ is divided by 3, the remainder is 1. When k+1 is divided by 5, the remainder is 0. Find the value of ‘k’?
(Similar to this)


9. Given a set of numbers and asked to find the difference of mean and median of the set.


10.

Given a figure like above. If the radius of the circle is 8, find the area of the shaded region?


11.

Given the length of the diagonal as 6. If the perimeter of the triangle ADB is 15, find the perimeter of the parallelogram ABCD?
(Similar to this)


12. If x > 0, then
Col A: mod(x+1)
Col B: x+1


13. Given that a person A takes 20mins to finish a work and person B takes 25mins to finish the same work. If they both work together, how much will they take to complete the same work?
(Similar to this)

[rajat.tiet]

My answers are as follows:

1. A
2. B
3. D
4. (pie*r^2)*(2/9)
5. D
6. 1215
7. 31/3
8. 19
9. What is meant by difference of mean in a series??
10. (256-64*pie)/4
11. 18
12. C
13. 100/9 mins


Lemme know if there are any corrections to be made....

Hoping for a quick response....

[chowdarymygang]

Can u plz explain the 1st question.. mode the most repeaded number in the series so how can we get the mode...??

[saraiya]

the first answer i have a doubt.

because as median is given as a+2 then the 4th term would be median

the total 7 no.s are (a-1, a, a+1, a+2, a+3, a+4, a+5)

now mean is given as summassion of all/total no.s

then (7a+14)/7 so mean is a+2.

and median is given as a+2.

mode can be calculated as 3M-2X

where M=median and X=Mode.

so the answer would be remain as a+2.

can you explain me how you got the answer as a?

[rajat.tiet]

Well, I guess your method is correct. I happen to see in the question that A is repeating in all the numbers, so thought that A should be the mode. Nevermind, I guess your's should be correct.

By the way, how do you calculate the mode with 3X-2M?
I mean... How did you come to the answer as a+2 using this formula?

[Rakesh s]

1.a+2
2.B
3.D
4.2/9(pi*r^2)
5.D
6.1215
7.31/3
8.can u people explain it.
10.(64-16*pi)
11.18
12.c
13.11+1/9
please correct me if any mistakes

[prashanth25]

1)a+2

2)b

3)b

4)2/9(pi*r^2)

5)d

6)1215

7)19/3

4

9)16*(4-pi)

11)18

12)c

13)100/9

[preeths]

for 9th question... it is not given that the outer figure is a square and also we could see a slight part of circle coming out(not reliable of course), so no solution..pls correct me

[pravita]

in question no3....if we assign values for t and y for eg 1 or -1 or even t=1 and y=-1..we get values greater to 0 but it is given the value is lesser than 0 and which means the value shoud be negative ..hence y should be greater than t ..kindly correct me if i am wrong

[pravita]

can some1 explain me question no 4

[pravita]

--------------------------------------------------------------------------------


reply
1.a+2
2.B
3.D
4.2/9(pi*r^2)
5.D
6.1215
7.31/3
8.can u people explain it.
10.(64-16*pi)
11.18
12.c
13.11+1/9
please correct me if any mistakes

rakesh
for a number to be divisible say for eg n the apply this equation for checking the divisibility of any number
n=dq+r(d=divisor,q=qoutient,r=remainder)
in the case of 8th question
k=3q+1
if we take q=1,2,3,..so we can knw the number .in this case we get k=4
so when we check with second condition given that k+1 / 5 gives r=0..
4+1=5 5/5 gives 0 remainder.

[pravita]

can sme one explain...hw is the answer for 11 question...is 18?

[hamid]

I think for question no. 8 k can be anything like:
4,19,34,49,64 etc...
Plz. correct me if I'm wrong

[pravita]

yeah ..but i guess..the question shud b more discrete...like minimum value

[nehareddy4u]