Aptitude Questions: Simplification Set 19

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Questions Penned by Yogit

Q(1 – 4) calculate the approximate value in the below questions: –

1. 16.003*29.998 – 40.002*9.009 =?
   a) 110
   b) 118
   c) 120
   d) 124
   e) 130
   
   Answer & Explanation

   Answer – c) 120
   Explanation :
   16*30 – 40*9 = 480 – 360 = 120
   
   
   
2. 3211.991 + 47.0091 – 2343.981 + 12.001 =?
   a) 925
   b) 926
   c) 927
   d) 928
   e) none of these
   
   Answer & Explanation

   Answer – c) 927
   Explanation :
   3212 + 47 – 2344 + 12 = 927
   
   
   
3. 420.009 ÷ 13.998 + 11.997 – 17.0023 =?
   a) 23
   b) 24
   c) 25
   d) 26
   e) 27
   
   Answer & Explanation

   Answer – c) 25
   Explanation :
   420/14 + 12 – 17 = 25
   
   
   
4. √(840.999) * √(49.001) – 77.001 = ? + 4000.001
   a) – 3874
   b) – 3774
   c) – 3974
   d) – 2874
   e) none of these
   
   Answer & Explanation

   Answer – a) – 3874
   Explanation :
   29*7 – 77 – 4000 = ?
   ? = – 3874
   
   
   

Q(5 –10) what should come in place of question mark (?) in the following questions: –

5. 1777 – 2349 – 1345 + 6523 = ?
   a) 3706
   b) 4706
   c) 3976
   d) 4176
   e) 5276
   
   Answer & Explanation

   Answer – b) 4706
   Explanation :
   8300 – 3694 = 4706
   
   
   
6. (2/3)*(7/3)*(9/2)*? = 560*(1/9)
   a) 40/9
   b) 50/9
   c) 70/9
   d) 80/9
   e) none of these
   
   Answer & Explanation

   Answer – d) 80/9
   Explanation :
   x = 560/(9*7) = 80/9
   
   
   
7. 2387 – 123 + 980 = ? – 145 + 945
   a) 2244
   b) 2434
   c) 2444
   d) 2354
   e) 2544
   
   Answer & Explanation

   Answer – c) 2444
   Explanation :
   ? = 3512 – 1068 = 2444
   
   
   
8. 1.96*1.96 + 1.04*1.04 – 2.08*1.96 = ?
   a) 0.7464
   b) 0.8464
   c) 0.9464
   d) 0.8262
   e) none of these
   
   Answer & Explanation

   Answer – b) 0.8464
   Explanation :
   It can be written in a^2 + b^2 – 2*a*b form i.e. (a-b)^2
   (1.96 – 1.04)^2 = 0.92^2 = 0.8464
   
   
   
9. 41% of 801 – 150.17 = ? – 57% of 910
   a) 693
   b) 694
   c) 697
   d) 707
   e) none of these
   
   Answer & Explanation

   Answer – c) 697
   Explanation :
   (41/100)*800 – 150 = x – (57/100)*910
   
   
   
10. (5/2)*(3/2)*(3/5)*? = 270
    a) 60
    b) 90
    c) 120
    d) 150
    e) 180
    
    Answer & Explanation

    Answer – c) 120
    Explanation :
    9/4*x = 270, x = 120
    
    
    

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