Showing posts with label approximation quiz. Show all posts
Showing posts with label approximation quiz. Show all posts

Sunday, 19 November 2017



Directions (1-15): What will come in place of question marks ‘?’ in the following questions? (You do not have to calculate the exact value?


(a) 110
(b) 90
(c) 200
(d) 160
(e) 125

Q2. (341789 + 265108) ÷ (8936 - 3578) = ?  
(a) 150
(b) 165
(c) 135
(d) 120
(e) 110 

(a) 700
(b) 850
(c) 900
(d) 800
(e) 650 

(a) 21
(b) 8
(c) 25
(d) 13
(e) 30 

(a) 4445
(b) 4545
(c) 4475
(d) 4595
(e) 4515 

Q6. (19.97% of 781) + ? + (30% of 87) = 252 
(a) 40
(b) 50
(c) 25
(d) 70
(e) 80 

Q7. 423.62 - 269.21 ÷ (11.9% of 78) = ?  
(a) 525
(b) 455
(c) 645
(d) 395 
(e) 275 

 
(a) 32
(b) 39
(c) 24
(d) 28
(e) 12

Q9. 8399.999 ÷ 375.002 × 14.996 = ?  
(a) 565
(b) 225
(c) 335
(d) 625
(e) 455 


(a) 223
(b) 264
(c) 334
(d) 354
(e) 201

Q12. 32.1×2799÷549+120= ? 
(a) 220
(b) 284
(c) 375
(d) 505
(e) 190

Q13. 15.2% of 726 × 12.8% of 643 = ?  
(a) 9110
(b) 9088
(c) 9100
(d) 9096
(e) 9082 

Q14. 2418.065 + 88 ÷ 14.2 × 6 = ?  
(a) 1059
(b) 2419 
(c) 2496
(d) 2455
(e) 1985 

Q15. 5.6% of 240 ÷ 0.3% of 480 = ? 
(a) 8.43
(b) 9.33 
(c) 7.53
(d) 8.33
(e) 13.44 

Solutions







S6. Ans.(d)
Sol. (19.97% of 781) + ? + (30% of 87) = 252 
Or (20% of 780) + ? + (30 % of 87) = 252 
Or 156 + ? + 26 ≈ 252 
Or 182 + ? ≈ 252 
Or ? ≈ 252 - 182  
Or ? = 70  



S9. Ans.(c)
Sol. Here, the given expression can also be written as 
8400 ÷ 400 × 15 
Or 21 × 15 = 315 ≈ 335 



S12. Ans.(b)
Sol. Here, the given expression can also be written as 
32 × 2800 ÷ 560 + 120 = ? 
[applying BODMAS] 
Or ? = 32 × 5 + 120 
Or ? = 160 + 120 = 280 ≈ 284 

S13. Ans.(a)
Sol. Here, the given expression can also be written as 
15% of 725 × 13% of 643 = ? 
Or ? 15/100×725×13/100×643 
Or ? = 15 × 7.25 × 13 × 6.43 
Or ? = 15 × 7.25 × 13 × 6.5 
Or ? = 195 × 7.25 × 6.5 
= 9189.375 ≈ 9110 

S14. Ans.(d)
Sol. Here, the given expression can also be written as 
2418 + 88 ÷ 14 × 6 = ? 
Or ? = 2418 + 6.3 × 6 
Or ? = 2418 + 38 
Or ? = 2456 ≈ 2455  


Friday, 3 November 2017


Directions (1-28): What will come in place of question marks ‘?’ in the following questions? (You do not have to calculate the exact value?


Q1. (341789 + 265108) ÷ (8936 - 3578) = ?  

A. 150
B. 165
C. 135
D. 120
E. 110 


Q2. (19.97% of 781) + ? + (30% of 87) = 252 

A. 40
B. 50
C. 25
D. 70
E. 80 

Q3. 423.62 - 269.21 ÷ (11.9% of 78) = ?  

A. 525
B. 455
C. 645
D. 395 
E. 275 

Q4. 8399.999 ÷ 375.002 × 14.996 = ?  

A. 565
B. 225
C. 3.35
D. 625
E. 455 

Q5. 32.1×2799÷549+120= ? 

A. 220
B. 284
C. 375
D. 505
E. 190

Q6. 15.2% of 726 × 12.8% of 643 = ?  

A. 9110
B. 9088
C. 9100
D. 9096
E. 9082 

Q7. 2418.065 + 88 ÷ 14.2 × 6 = ?  

A. 1059
B. 2419 
C. 2496
D. 2455
E. 1985 

Q8. 5.6% of 240 ÷ 0.3% of 480 = ? 

A. 8.43
B. 9.33
C. 7.53
D. 8.33
E. 13.44

Q9. 816.23/34.98 × 24.999 = ?

A.560
B.540
C.520
D.580
E.600

Q10. (4722+3272+5324)/(491+769+132)=?

A.40
B.10
C.15
D.25
E.20

Q11. 22 1/3 % of 435.1 -  11/7 % of 1734.68 = ?

A.59
B.62
C.50
D.69
E.78

Q12. √1681 + ∛4094 = ?

A.57
B.75
C.78
D.67
E.76

Q13. (803.63)² = ?

A.506000
B.787800
C.646400
D.767600
E.566000

Q14. (1.2)² / 1.3333  = (1.1)^? / (1.22)³

A.8
B.6
C.7
D.5
E.3

Q15. 2809/27.86 × 6.26 - 125.88 - 246.18 = ?

A.245
B.266
C.254
D.238
E.272

Q16. (13.67)² - (4.77)²+ (8.26)³ - (5.23)³ = ?

A.636
B.600
C.520
D.624
E.612

Q17. 21% of 234.20 + 54% of 150 - 3.76% of 102.05 = ?

A.129
B.122
C.147
D.136
E.167

Q18. (1218 )² / 18 = ? × 1224

A.90
B.67
C.70
D.60
E.78

Q19. (9.979)3 – (23.99)2 + (1.99)5 = ?

A. 350
B. 490
C. 390
D. 420
E. 450

Q20. 2508 ÷ 15.02 + ? × 11 = 200

A. 15
B. 10
C. 3
D. 1
E. 25

Q21. (3.2)² + (9.8)² + (8.13)² + (4.24)² = ?

A. 180             B. 190
C. 198             D. 206
E. 184

Q22. 2418.065 + 88 ÷ 14.2 × 6 = ?

A. 2470                       B. 2465
C. 2460                       D. 2450
E. 2455

Q23. √12000 × 34.98 + 150.04 = ?

A. 3000           B. 4700
C. 4000           D. 3500
E. 5600
E. None

Q24. (15)^2 + (19.99)^2 + (24.001)^2 = ?
a. 1250           
b. 1200
c. 1300           
d. 1120
e. 1160

Q252. 12.25 × ? × 21.65 = 3545.64 + 23.36
a. 20               
b. 15
c. 13               
d. 18
e. 24

Q26. (4438 – 2874 - 559) ÷ (269 – 106 - 83) =?
a. 55               
b. 13
c. 47               
d. 29
e. 31

Q27. 125% of 605 + 4/5 of 218 = ?
a. 840              b. 931
c. 618              d. 1024
e. 726

Q28. 15.28 x 12.36 + 41.17 x 21.34 = ?
a. 1125            b. 1098
c. 1132            d. 1032

e. 1041

                                    Answers Will Be Updated Soon.....

Friday, 24 March 2017





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Directions—(1–5): What approximate value should come in place of question mark (?) in the following questions? (You are not expected to calculate the exact value.)

1. 194 ÷ 0.4 ÷ 0.7 = ?
(1) 681
(2) 654
(3) 693 
(4) 670
(5) 700


2. 1125 ÷ 21 x 1621 ÷ 24 = ?
(1) 3525
(2) 3618
(3) 3641 
(4) 3591
(5) 3636

3. 15.01 x 11.99 + 21.01 – 34 = ?
(1) 167 
(2) 198
(3) 132
(4) 152
(5) 187

4. 3√7910 = ? 
(1) 33
(2) 38
(3) 29
(4) 43
(5) 24

5. 0.99% of 66021 + 0.19% of 53517 = ?
(1) 600
(2) 760
(3) 780
(4) 670
(5) 635

Directions (Q. 6–10): What should come in place of question mark (?) in the following number series ?

6. 2, 4, 9, 20, 37, ?
(1) 56 
(2) 58
(3) 57
(4) 60
(5) None of these

7. 17, 34, 53, 74, 97, 122, ?
(1) 149
(2) 147
(3) 151
(4) 152
(5) None of these

8. 1,  3,  11,  57,  401,  3611, ?
(1) 25279
(2) 39723
(3) 53169
(4) 37923
(5) None of these

9. 2, 9, 28, 65, 126, 217,  ?
(1) 340
(2) 342
(3) 346
(4) 354
(5) None of these

10. 4, 10, 18, 28, 40, 54, ?
(1) 70
(2) 68
(3) 72
(4) 73
(5) None of these





ANSWERS
1. (3)

2. (2)

3. (1)

4. (4)

5. (2)

6. (4)
The difference between terms is alternate prime numbers i.e. 2, 5, 11, 17 and so on.

7. (1)
The differences are 17, 19, 21, 23 and so on.

8. (2)
The pattern is x1+2, x3+2, x5+2 and so on.

9. (5)
The numbers are 1^3+1, 2^3+1, 3^3+1 and so on.

10. (1)
The pattern is +6, +8, +10, +12 and so on.




Wednesday, 2 November 2016





1. (989/34) ÷ (65/869) * (515/207) = ?

A. 845
B. 870
C. 945
D. 745
E. 890

2. 67% of 801 – 231.17 = ? – 23% of 789

A. 400
B. 490
C. 550
D. 600
E. 750

3. (32.13)2 + (23.96)2 – (17.11)2= ?


A. 1410
B. 1310
C. 1550
D. 1650
E. 1810

4. 5907 – 1296 ÷ 144 = ? * 8


A. 700.25
B. 658.25
C. 628.25
D. 737.25
E. 630.5

5. √7378 * √1330 ÷ √660 = ?


A. 150
B. 160
C. 120
D. 170
E. 140

6. 22240 ÷ √? = 34 * 12


A. 3065
B. 3085
C. 3025
D. 3075
E. None of these

7. 8451 + 793 + 620 – ? = 6065 + 713


A. 3486
B. 3586
C. 3286
D. 3186
E. None of these

8. (12.25)2 – √625 = ?


A. 145.1625
B. 125.0625
C. 155.1625
D. 165.0625
E. None of these

9. 156 + 16 * 1.5 – 21 = ?


A. 126
B. 149
C. 141
D. 159
E. None of these

10. (√7921 – √2070.25) * (1/4) = ?


A. 15
B. 16
C. 17
D. 19
E. 11




                                     ANSWERS

1) C. 945
2) B. 490
3) B. 1310
4) D. 737.25
5) C. 120
6) C. 3025
7) E. None of these
8) B. 125.0625
9) D. 159
10) E. 11



Wednesday, 26 October 2016




What approximate value should come in place of the question mark (?) in the following questions? (You are not expected to calculate the exact value.)

1. 25.675% of 1321 + 64.328% of 4001= ___?__

A. 2912
B. 3016
C. 3126
D. 3254
E. 3348

2. ³√5826 + 456= ? ÷ 31.001

A. 13740
B. 15632
C. 14690
D. 17572
E. 18174

3. 11.001 × ? × 25.875 = 678543

A. 2380
B. 2381
C. 2382
D. 2383
E. None of these

4. (2.36×2.36×2.36+5.63×5.63×5.63)/(2.36×2.36) + (5.63 × 5.63) + (5.63      × 2.36)

A. 11
B. 9
C. 8
D. 7
E. None of these

5. [(729)1/2 + (0.0016) ½ ]/8  of 134.567 = ?

A. 451
B. 453
C. 455
D. 456
E. None

6. 118.07 × 13.49 + 169.8% of 784 = ?

A. 2870
B. 2760
C. 2930
D. 2650
E. 2860

7. 49.80 % of 750.08 ÷ 11.02 = 56.09 –  ?

A.34
B.16
C.22
D.27
E.None of these

8. 65.56 × 124 – 312 × 5 = ? % of 2208.05

A.300
B.245
C.312
D.265
E.None of these

9. 17.38% of 1557 – 21.012 × 8.97 = ?

A. 100
B. 175
C. 95
D. 80
E. 150

10. 339% of 803 + 77.8 % of 1107 = ?

A. 3670
B. 3580
C. 3850
D. 3200
E. 3980



                                                  ANSWERS     


1. A : 2912

2. C : 14690

3. D : 2383
    ? =678543 / (11.001 ×25.875)
    ? = 678543 / 284.7
    ? = 2383
4. C : 8
    2.36+5.63 = 7.99 = 8

5. C : 455
    27+0.04= 27.04/8 = 3.38
    3.38 × 134.567 = 454.8 = 455

6. C: 2930
    ? nearly equals to 118 × 13.5 + (170 * 785)/100
    = 1593 + 1334.5 = 2927.5 nearly equals to 2930

7.  C : 22
     50% of 750÷11 = 56 – x
     375/11 = 56 – x
     34.09 = 56 – x
     X = 56 – 34.09 = 21.91 = 22

8. A : 300
    66*124 – 312*5 = x % of 2208
    8184 – 1560 = x% 2208
    6624 = x*2208/100
    X = 6624*100/2208
    X = 300

9. D : 80
    ? nearly equals to (17.4*1550)/100 - 21/9
    = 269.7 - 189 = 80.7 nearly equals to 80.

10. B : 3580
      ? nearly equals to (340*800)/100  +  (78*1100)/100
      = 2720 + 858 = 3578 nearly equals to 3580

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