Aptitude Questions: Simplification Set 25

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1. (4438 – 2874 – 559) ÷ (269 – 106 – 83) = ?
   A. 14.5
   B. 12.5
   C. 20.5
   D. 27.5
   E. None of these
   
   Answer & Explanation

   Answer – B. 12.5
   Explanation :
   4438 – 2874 – 559 = 1005 ; 269 – 106 – 83 = 80; 1005 ÷ 80 = 12.5
   
   
2. (78.95)² – (43.35)² = ?
   A. 4353.88
   B. 4153.88
   C. 4253.78
   D. 4053.78
   E. None of these
   
   Answer & Explanation

   Answer – A. 4353.88
   Explanation :
   (78.95)² – (43.35)² = 6233.1025 – 1879.2225 = 4353.88
   
   
3. 434.43 + 43.34 + 3.44 + 4 + 0.33 = ?
   A. 455.54
   B. 485.54
   C. 475.54
   D. 465.54
   E. None of these
   
   Answer & Explanation

   Answer – B. 485.54
   Explanation :
   434.43 + 43.34 + 3.44 + 4 + 0.33 = 485.54
   
   
4. (755% of 523) ÷ 777 = ?
   A. 5
   B. 6
   C. 8
   D. 7
   E. None of these
   
   Answer & Explanation

   Answer – A. 5
   Explanation :
   (755/100 * 523) = 3948.65
   3948.65 ÷ 777 = 5
   
   
5. 156 + 16 * 1.5 – 21 = ?
   A. 126
   B. 149
   C. 141
   D. 159
   E. None of these
   
   Answer & Explanation

   Answer – D. 159
   Explanation :
   16 * 1.5 = 24
   156 + 24 – 21 = 159
   
   
6. 783.559 + 49.0937 * 31.679 – 58.591= ? 
   A. 1280
   B. 3280
   C. 2280
   D. 1880
   E. None of the above
   
   Answer & Explanation

   Answer –C. 2280
   Explanation :
   49.0937 * 31.679 = 1555
   783 + 1555 – 58 = 2280(approx)
   
   
7. (√7921 – √2070.25) * (1/4) = ?
   A. 15
   B. 16
   C. 17
   D. 19
   E. 11
   
   Answer & Explanation

   Answer – E. 11
   Explanation :
   √7921 = 89 ; √2070.25 = 45.5 = 43.5/4 = 10.8 ≈ 11
   
   
8. (12.25)² – √625 = ?
   A. 145.1625
   B. 125.0625
   C. 155.1625
   D. 165.0625
   E. None of these
   
   Answer & Explanation

   Answer B. 125.0625
   Explanation :
   (12.25)² = 150.0625
   150.0625 – 25 = 125.0625
   
   
9. 8451 + 793 + 620 – ? = 6065 + 713
   A. 3486
   B. 3586
   C. 3286
   D. 3186
   E. None of these
   
   Answer & Explanation

   Answer – E. None of these
   Explanation :
   8451 + 793 + 620 = 9864 ;  6065 + 713 = 6778 => 9864 – 6778 = 3086
   
   
10. 22240 ÷ √? = 34 * 12
    A. 3065
    B. 3085
    C. 3025
    D. 3075
    E. None of these
    
    Answer & Explanation

    Answer – C. 3025
    Explanation :
    34 * 12 = 408
    √? = 22240/408 = 54.5 = 55 => x = 3025