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11. 1.66 × 1.66 + 0.66 × 0.66 − 1.32 × 1.66
  A.  2
  B.  0
  C.  1
  D.  4
     
   
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12. Simlify the following:
75983 × 75983 − 45983 × 45983 / 75983 + 45983
  A.  30200
  B.  31000
  C.  32500
  D.  30000
     
   
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13.
(63 + 36)2 + (63 − 36)2 / 632 + 362
  A.  2
  B.  0
  C.  1
  D.  3
     
   
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14. Simplify:
8 × {(164+64)2 + (161 − 64)2} / (164)2 + (64)2
  A.  18
  B.  16
  C.  19
  D.  12
     
   
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15. Find the value of :
(6.25 + 5.25)2 + (6.25 − 5 − 0.25)2 / 6.25 × 21
  A.  2
  B.  5
  C.  3
  D.  1
     
   
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16. Simplify:
0.704 × 0.704 − 0.296 × 0.296 / 0.704 − 0.296
  A.  1
  B.  3
  C.  4
  D.  2
     
   
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17. Simplify:
0.25 × 0.25 − 0.24 × 0.24 / 0.49
= ?
  A.  1.01
  B.  0.04
  C.  0.01
  D.  0.1
     
   
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18. Simplify:
0.73 × 0.73 × 0.73 + 0.27 × 0.27 × 0.27 + 0.81 × 0.73 / 0.73 + 0.27
  A.  2
  B.  1
  C.  3
  D.  4
     
   
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19. Find the value of :
(1.25)3 + 2.25 × (1.25)2 + 3.75 × (0.75)2 + (0.75)3
  A.  1
  B.  6
  C.  4
  D.  8
     
   
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20. Simplify:
1.33 × 1.33 × 1.33 − 0.33 × 0.33 × 0.33 - 3 × 0.33 × 1.33 / 2.4 × 2.4 × 2.4 + 1.6 × 1.6 × 1.6 + 4.8 × 2.4 × 4
  A.  
1 / 24
  B.  
1 / 36
  C.  
1 / 26
  D.  
1 / 34
     
   
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