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7Feb, 2021

Quantitative Aptitude: Quadratic Equations Questions Set 71

a)x^2 – 18x +72=0
b)3y^2 +7y + 4 =0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option A
x=6 , 12
y=-1 , -4/3
a)x^2 – 5x = 0
b)2y^2 +7 y-4 =0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option E
x= 0 , 5
y=-4 , 1/ 2
a)3x +2 y =16
b)2x+ 3y = 33/2

x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option B
x=3
y=3.5
a)2x^2 +19x + 44 = 0
b)2y^2 +3y – 20 =0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option C
x= – 4 ,-11/2
y= – 4 , 5/2
a)2x^2 -7x + 6 =0
b)4y^2 = 9
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option D
x = 2 or 3/2
y= 3/2 or -3/2
a)5/x – 4/y = -2
b)2/x +3/y= 13
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option A
x=1/2
y=1/3
a) x^2 =5625
b) y =3√421875
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option C
x= 75 , -75
y= 75
a)x^2 = 4
b)3y^2 – 4y – 4=0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option E
a)5x^2 -13x – 6 = 0
b)3y^2 +14 y + 8 = 0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option A
x= -2/5 , 3
y= – 4 , -2/3
a)4x^2 +23x +15 = 0
b)4y^2 – 11y + 6 =0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option B
x= -5 , -3/4
y= 3/4 , 2

01

1Feb, 2021

Quantitative Aptitude: Quadratic Equations Questions Set 70

a)(x-3) (x+2)=0
b)y^2 -7y +12=0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option C
x=3 , -2
y=3 , 4
a)x(27-x) = 182
b)y(55-y) = 750
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option B
x=13 ,14
y=25 , 30
a)(x+3) (x+29) = 360
b) 480 / y =[480/(y- 8)] – 3
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option E
x= 7 , -39
y = 40 , -32
a)2x^2 +x -300 =0
b)y^2 – 45 y + 324 = 0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option E
x=12 , -12.5
y= 36 , 9
a)13x^2 – 32x – 21 = 0
b)8y^2 +6y – 5 =0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option E
x=3, -0.5
y=-1.25, 0.5
a)16x^2 +20 x + 6 = 0
b)y^2 +15 y +56=0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option A
x= -0.25 , -1.5
y= -8 , -7
a)12x^2 +29x +14 =0
b)Y^2 +9y +18 = 0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option A
x= – 1.75 , -0.60
y= -6 , -3
a)x^2 – 33x +272 =0
b)y^2 – 30y +224 = 0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option D
x=16,17
y= 16 , 14
For which of the following ,the value of X is greater than Y.?
a)3x^2 +23x +44= 0 ; 3Y^2+20 y +33=0
b)3x^2 +29x+56=0 ; 2y^2 +15y +25 = 0
c)3x^2 – 16x +21 = 0; 3y^2 -28y +65 =0

Only a

Only b

Both a and c

Both b and c

None follows

Option E
a) x= -4 , -11/3 ; y= -3 , -11/3
b)x= -7 , -8/3 ; y = -5 , -5/2
c)x = 3 , 7/3 ; y =5 ,13/3
a)x^2 – 8x +15 = 0
b)y^2 -13y +40 = 0
x>y

x

x is less than or equal to y

x is greater than or equal to y

x=y or relationship cannot be established

Option C
x=5 , 3
y=8 , 5

02

28Jan, 2021

Quantitative Aptitude: Profit and Loss Set 24

A shopkeeper mark his copies at an advance of 69% on the actual cost of production.He allows a discount of 15% and also gives a copy free for every dozen sold at a time.What rate percent of profit does the shopkeeper make,if copies are sold in lots of 24?
35%

38%

36%

42%

None of these

Option B
Let C.P be Rs 100.
M.P=Rs 169
S.P=Rs 143.65
C.P of 25 copies=Rs 2500
S.P of 24 copies=143.65*24=Rs 3447.60
Percent of profit=947.6/2500 * 100 =38%
Mani gain 25% by selling a table for Rs 47.50 and would gain by 15% by selling a sofa for Rs 57.50.He sells the table for Rs 45;What is the least price for which he must sell the sofa to avoid any loss on two together?

Rs 62

Rs 65

Rs 43

Rs 45

Rs 51

Option C
CP of table-100/125 * 47.5 = Rs 38
CP of sofa=100/115 * 57.5
Required =(50+38)-45
A shopkeeper sells vegetables at cost price,but use false weights.He gains 40% in this manner.What weight does he subsitute for 1 kg?
716 1/7 gm

714 2/7 gm

800 gm

815 gm

None of these

Option B
So,100-x/x * 1000 = 40
A fruit vendor sells fruits at cost price only.But he uses 650 gm weight at the place of 1000 gm weight for a kg.What its his net profit percentage?
50%

51 2/3%

53 11/13%

50 1/7%

None of these

Option C
=350/650 * 100
A shopkeeper sells wheat to a customer at a profit of x% over the CP,besides if he cheat his customer by giving 950 gm instead of 1 kg.Thus his overall percentage is 20%.Then find the value of x?
15

10

12

14

Noone of these

Option D
=1000*(100+x/100)=950* 120/100
A shopkeeper sold 12 copies at a profit of 20% and 8 copies at a profit of 10%.If he had sold all the 20 copies at a profit of 15% ,then his profit would have been reduced by Rs 36.What is the cost price of each copy?
Rs 150

Rs 165

Rs 170

Rs 180

None of these

Option D
When the vendor reduces the selling price of an item from Rs 1180 to Rs 1126,his loss increases by 5%.What is the cost price of the item?
Rs 1080

Rs 1100

Rs 1550

Rs 950

Rs 875

Option A
5% of Cost price=1180 – 1126
CP=54 * 100/ 5 =Rs 1080
Mani sold a pencil at Rs 96 in such a way that his percentage profit is same as the cost price of the pen.If he sells it at twice the percentage profit of its prevoius percentage profit the n the new selling price will be which of the folloing?
Rs 202

Rs 150

Rs 132

Rs 155

None of these

Option C
Let Cp be Rs x
SP=X(100+X)/100
x(100+x)/100=96
x=60
Profit percentage=60%
New SP=60 * 220 / 100
The prfit earned after selling pen for Rs 1680 is the same as the loss incurred after selling the item for Rs 1512.What is the cost price of the pen?
Rs 1540

Rs 1500

Rs 1596

Rs 1495

None of these

Option C
1680-x = x – 1512
x = 1596
The cost price of two sofas is same.One is sold at a profit of 20% and te other Rs 5200 more than the first.If the net profit is 40%,find the cp of each sofa?
Rs 15400

Rs 12000

Rs 13000

Rs 11000

None of these

Option C

03

26Jan, 2021

Quantitative Aptitude: Number Series Set 144

Study the following and answer the questions;
18 , 119 , 708 , ? , 14136 , 42405

2540

2500

3535

3450

None of these

Option C
18*7-7=119
119*6-6=708
708*5-5=3535
5 , 7.5 , 11.25 , 17.5 , ? , 50
27.50

28.75

25.50

24.75

None of these

Option B
7.5-5=2.5
11.25-7.5=3.75
=3.75-2.5=1.25
15 , 29 , 47 , 73 , 115 , ?
185

170

165

189

None of these

Option D
15*2-1=29
29*2-11=47
47*2-21=73
5 , 7 , 10 , 36 , 136 , ?
690

685

680

705

700

Option A
5*1+2=7
7*2-4=10
10*3+6=36
5 , 8 , 6 ,? , 7 , 12
10

11

10.75

9

None of these

Option A
5*2-2=8
8/2 + 2 =6
6*2-2=10
8 , 10 , 14.5 , 22.5 , 35 , 53 , ?
80.00

77.50

69.50

65

None of these

Option B
10-8=2
14.5-10=4.5
22.5-14.5=8
Study the following and find the wrong number:
21 , 22 , 28 , 38 , 55 , 81 , 118

21

22

38

55

118

Option B
21+1^2+1=23
23+2^2+1=28
28+3^2+1=38
90720 , 10080 , 1440 , 240 , 48 , 10 , 4
4

10

10080

240

None of these

Option B
4*3=12
12*4=48
48*5=240
3 , 7 , 6 , 28 , 38 , 112 , 448
38

3

448

7

28

Option A
First series- 3 , 6 , 9 (+3)
Second ne- 7 , 28 , 112 , 448 (multiplied by 4)
4088 , 2394 , 1290 , 520 , 252 , 78 , 14
520

252

78

14

4088

Option A
7^4-6
6^4-6
5^4-5

04

25Jan, 2021

Quantitative Aptitude: Simple/Compound Interest Set 18

The Simple intrest on a certain sum for 2 years at 10% per annum is Rs 90.What is the corresponding compound intrest?
Rs 91

Rs 97.25

Rs 90.50

Rs 94.50

None of these

Option D
S.I=(100*90) / (2*10)=Rs 450
C.I=450*(1+10)^2 /100 – 450
Mani borrowed a certain sum from Akansha at a certain rate of simple intrest for 2 years.He lent this sum to Ravi at the same rate of intrest compounded annually for the same period.At end of two years,he received Rs 4200 as compound intrest but paid Rs 4000 only as simple intrest.Find the rate of intrest?
15%

10%

12%

20%

11%

Option B
Let sum be Rs X.
Roi=R%=2 years
4000 = (X*R*2)/100
What sum invested for 2 years at 12 percent compounded annually will be grown to Rs 4390.40 ?
Rs 4000

Rs 3500

Rs 2550

Rs 2500

None of these

Option B
If difference between compound intrest and simple intrest on a sum at 5% p.a for 2 years is Rs 16.Then find the simple intrest?
Rs 560

Rs 520

Rs 640

Rs 710

Rs 700

Option C
16 = P (5/100)^2
P=Rs 6400
Therefore,SI=(6400*5*2) /100 =Rs 640
The difference between Compound intrest and simple intrest on a amount Rs 15000 for 2 years is Rs 96.What is the rate of intrest per annum?
6.50%

7%

8%

9.25%

None of these

Option C
Mrs Shubhra finds that due to fall in rate of intrest from 9% to 6%,her yearly income diminished by Rs 267.What is her capital?
Rs 8900

Rs 7500

Rs 8000

Rs 9000

None of these

Option A
Differnece i roi=3%
Let capital be Rs X.
3% of X=Rs 267
X=Rs 8900
Shubhra lends Rs 30000 to two of her friends.She gives Rs 15000 to the first at 6% p.a simple intrest.She wants to make a profit of 10% on the whole.The simple intrest rate at which he should lend the remainning sum of money to second friend is which of the following?
7%

8%

10%

14%

None of these

Option D
SI on 15000=(15000*6*1)/100 = Rs 900
Profit to made on Rs 30000=(30000*10)/100=Rs 3000
Si on Rs 15000=
Meenakshi borrows Rs 8000 at S.I.At end of 3 years,she again borrows Rs 7000 and closed her account after paying Rs 8415 as intrest after 8 years from the time she made the first borrowing.Find the rate of intrest?
8.5%

9.0%

9.5%

7.5%

None of these

Option A
Let x be the rate of intrst
=8000 * 3x/100 + 15000 * 5x/100 = 8415
=240x+750x=8415
x=8.5%
Rashi borrows a sum of Rs 2000 at the beginning of a year.After 4 months,Rs 2600 more is borrowed at a rate of intrest double the previous one.At end of one year,the sum of intrrst on both the loans is Rs 494.What is first rate of intrest per annum?
6.5%

7.0%

8.5%

8.0%

9.5%

Option E
Lete rate be x.
SI=2000x/100 = 20x
P=Rs 2600′
Rate=2x
SI=5200x/100=52x
52x=494
x=9.5%
At what percentage of S.I,sum of moneey will be doubling itself in 7 years?
12(3/7)%

14(2/7)%

8%

9.5%

None of these

Option B

05

24Jan, 2021

Quantitative Aptitude: Probability Questions – Set 17

In a freeze,there are 6 apples,3 mango , 5 grapes and 2 guava.If three items are picked at random,what is the probablitiy that two are grapes and one is an mango?
2/27

3/56

3/17

4/29

None of these

Option B
Total items=6+3+5+2=16
P=(5C2 * 3C1) / 16C3
Bag P contain 7 ruby balls,”X grey balls and 5 yellow balls.The probability to pick grey ball at random is 2/5.Another Bag Q contains “X-3″ ruby balls ,”X-4” yellow balls and 6 grey balls.If two balls are picked one after the other from Bag Q at random then what is the probablity for the balls to be ruby?
3/20

4/27

1/20

2/21

None of these

Option D
X/(7+X+5)=2/5
X=8
Bag Q=5 R,4Y , 6G
Six individual shirts are present in drawer.Two ruby,two blue and two white.Mani picked one shirt randomly to wear.Now he draws another shirt fro the drawer then what is the probablity he draws a shirt of same color?
1/2

1/3

1/5

2/5

None of these

Option C
Born child to be male is having 0.52 probablility and to be female is 0.48.If you have two children,then what is the probability that they both are females?
0.5484

0.2504

0.2304

0.3541

None of these

Option C
=0.48*0.48
Priyank places a deck of 52 cards.If you pick two cards then what is the probability that both are aces?
2/221

3/224

1/219

1/221

None of these

Option D
=4/52 * 3 /51
Mani have drwan a card from a deck of 52 cards,without replacing it mani have drwan another card.Then what is the probability of that card to be king or diamond?
2/51

1/51

3/52

4/51

None of these

Option B
=1/52 * 0 + 51/52 * 1/51
In a interview,out of 14 candidates there are 6 female and 8 male.It is desired to select 2 candidates for the job.The probability that atleast one of selected persons will be a female is which of the following?
50/51

77/91

81/91

40/91

None of these

Option B
Male=8C2=14
Probability of selecting no women=14/91
Probability of selecting atleast one women=1 – 14/91
Srikant has two bags(P and Q) that contain grey and black balls.In bag P there are 6 grey and 8 black balls and in Bag Q there are 6 grey and 6 black balls.One ball is drwan out from any of this two bags.What is the probablity that the ball drawn is black?
14/21

15/28

16/19

13/21

None of these

Option B
P bag=1/2(8C1/14C1)=2/7
Q bag=1/2(6C1/12C1)=1/4
Total Probablity=2/7 + 1/ 4
X and Y are sitting in a circle with 11 other persons.If the arrangement of 11 persons is at random,then the probability that there are exactly 4 persons between them?
1/2

1/3

1/6

1/4

None of these

Option C
A carto contains 4 ruby,5 blue and 6 greytoffees.If 3 toffees are drwan at random,what is the probablity that ll the toffees are of same color?
25/406

33/200

47/455

34/455

None of these

Option D
=(4C3 + 5C3 + 6C3) / 15C3

06

20Jan, 2021

Quantitative Aptitude: Number Series Set 143

Study the following and find the missing number:
3 , 13 , 40 , 101 , 213 , ?

390

393

291

298

None of these

Option B
Diffrenec of 10 , 27 , 61 , 112
3 , 3, 9 , 33 , 93 , ?
195

213

205

235

None of these

Option B
3+(1^3-1)
3+(2^3-2)
7 , 14 , 42 , 210 , 1740 , ?
15000

16550

16170

18455

None of these

Option C
7*2=14
14*3=42
42*5=210
17 , 289 , 425 , 493 , 527 , ?
550

565

585

544

None of these

Option D
20 , 30 , 72 , 90 , 156 , ?
190

182

195

192

None of these

Option B
4^2+4
6^2-6
8^2+8
Find the wrong number in the following:
476 , 480 , 479 , 495 , 490 , 522 , 497

476

490

495

522

497

Option B
476+2^2=480
480-1^2=479
479+4^2=495
11 , 18 , 35 , 80 , 159 , 286
80

286

35

18

None of these

Option C
18-11=7
37-18=19
80-37=43
112 , 224 , 280 , 308 , 322 , 330
330

112

224

308

None of these

Option A
444 , 440 , 431 , 420 , 390 , 354
431

420

390

354

None of these

Option B
24 , 12 , 18 , 45 , 157.25 , 708.75
24

708.75

157.25

12

None of these

Option C

07

15Jan, 2021

Quantitative Aptitude: Ratio and Proportion Questions Set 7

P,Q and R divided Rs 4200 among themselves in ratio 7:8:6.If Rs 200 is added to each of their shares,what is new ratio in which they will receive the amount?
7:8:9

8:9:7

5:5:2

1:3:7

None of these

Option B
P=[7/(7+8+6)]*4200=Rs 1400
Q=[8/(7+8+6)]*4200=Rs 1600
R=[6/(7+8+6)]*4200=Rs 1200
New ratio when RS 200 is added,=1600:1800:1400
The ratio of monthly salaries of X and Y are in the ratio of 15:16 and that of Y and Z are in the ratio 17:18.Find the monthly income of Z if the total of their monthly salary is Rs 1,87,450?
Rs 64000

Rs 58000

Rs 66240

Rs 65400

None of these

Option C
X:Y:Z=255:272:288
So,Z’s salary=(288/(255+272+288)]=Rs 66240
Rs 5750 is divided among X,y and Z such that if their share be reduced by Rs 10 , Rs 15 and Rs 25 respectively,the remainder amounts with them shall be in the ratio 4:6:9.Wat was Z’s share then?
Rs 3000

Rs 2725

Rs 3500

Rs 2545

None of these

Option B
Z’s share will be after rduction =9/4+6+9) *5700 = 2700
Actual Z’s share =2700+25 =Rs2725
The income of P,Q and R are in ratio of 3:4:7.If their incomes be changed such that new income of P increases by 50%,25% incresed for Q and 25% decrease for R.Find the ratio of their new incomes?
17:21:22

22:21:25

15:17:19

18:20:21

None of these

Option D
New ratio=(150/100)*3 : (125/100)*4 :(75/100)*7
The ratio of income of X and Y is 2:3.The sum of their expenditure is Rs 8000 and the amount of savings of X is equal to amount of expemditure of Y.What is the new ratio of sum of income to the sum of savings?
4:5

3:7

5:3

1:2

None of these

Option C
2I-E+E=8000
I=4000
Sum of income=5*I=5*4000
Sum of savings=20000-8000=12000
Ratio=20000:120000
There are 2 containers of equal capacity.The ratio of milk to chemical in 1st container is 4:5 and in 2nd container is 3:7.If they are mixed up then the ratio of milk and chemical in mixtire will be what?
67:113

22:29

51:62

69:111

None of these

Option A
The ratio of Girish age and his father’s age is 5:12.The difference of their ages is 21.Tje ratio of their ages after 4 year will be which of the following?
20:24

17:21

33:37

19:40

None of these

Option D
12y-5y=21
y=3
After 4 years=19:40
Rishi and Shivani have money in ratio 5:12 and Shivani and Krishnam have money i ratio 5:12.If Rishi has Rs 500,what money Krishnam has wuth him?
Rs 3250

Rs 2504

Rs 8800

Rs 2880

None of these

Option D
Rishi:Krishnam=25/144
Krishnam=144*500/25=Rs 2880
The ratio of Y and Z are in ratio 5:8.After 6 years,the ratio of ages of Y and Z will be in the ratio 17:26.Find the prset age of Z?
65 years

70 years

72 years

82 years

None of these

Option C
Y/Z=5/8
Y+6/Z+6=17/26
A amount of Rs 12600 is distributed between P,Q and R.For every rupee,P gets,Q gets 80 p and for very rupee Q gets ,R get 90 p.Finf the amount get by R.
Rs 3300

Rs 2600

Rs 2500

Rs 3600

None of these

Option D
Ratio of monet P and Q=100:80
Ratio between Q and R=100;90
Ratio of P:Q:R=100;80:72
R gets=50*72

08

8Jan, 2021

Quantitative Aptitude: Simplification Questions Set 106

Study the following and answer the questions:
(36.14)^2 – (21.28)^2 =?

850

860

865

853

None of these

Option D
(x+y)(x-y)
(x)^2 + (123)^2= (246)^2 – (99)^2 – 2462
190

180

175

182

None of these

Option D
x^2 + 15129 = 60516 – 9801 – 2462
x^2 + 15129 = 48253
x^2=33124
x= 182
64^12 / 4^15 = 64^x
6

5

4

7

2

Option D
=64^12-5=7
(9.0 / 2 * 27 / 9 ) / (18/7.5 * 5.0 / 4) = ?
5.5

4.0

4.5

3.0

None of these

Option C
( √5 – 2)^2 = x – √80
9

7

6

10

12

Option A
=5+4-4 √5 +4 √5
=9
572.0 / 26 * 12 – 200 = (2)^x
8

4

6

10

None of these

Option C
=22 * 12 – 200 = (2)^x
=264 – 200
=6
(755.0% of 523.0) / 777.0 = x
6

4

3

5

9

Option D
=3948.65 / 777.0
=5.08 = 5
3.325 + 3.012 + 0.660 + 31.151 + 0.251 = ?
40.019

35.055

37.514

38.399

None of these

Option D
25 * 3.250 + 50.40 / 24.0 = ?
75

80

77

83

None of these

Option D
=25* 3.250 + 2.1
=81.25 +2.1 = 83.35
5907 – 1296 / 144 = x * 8.0
700.05

705.25

751.54

737.25

None of these

Option D

09

5Jan, 2021

Quantitative Aptitude: Number Series Set 142

Find out the wrong number series:
5 , 14 , 52 , 220 , 1125 , 6786

52

5

220

1125

None of these

Option A
5*2+4=14
14*3+9=51
51*4+16=220
10 , 28 , 110 , 508 , 2665
10

110

28

508

2665

Option B
10*2+8=28
28*3+27=111
10 , 30 , 130 , 350 , 1220 , 2210
1220

10

30

350

2210

Option A
Find the missing number in the follliwng:
20 , 19 , 20 , 16 , ? , 9 , 12

17

18

20

32

22

Option B
All are in series -1^2 , +1 , -2^2
198 , 150 , 110 , 72 , 42 , 18.Find the wrong number?
110

150

42

18

None of these

Option A
-6*8
-6*7 and so on
125 , 92 , 93 , ? , 69 , 12
50

65

54

48

None of these

Option D
11^2 + 4 * 1
10^2 – 4*2
9^2 + 4*3
17 , 67 , ? , 1501 , 9055
285

293

290

450

None of these

Option B
3 , 22 , ? , 673 , 2696 , 8093
134

140

145

150

None of these

Option A
798 , 654 , 554 , 490 , 454 , ?
412

438

445

420

None of these

Option B
-12^2
-10^2 and so on
2 , 11 , 46 , 141 , 286 , ?
294

291

298

300

None of these

Option B
2-5+1=11
11*4+2=46

10

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