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36.
The value of (1 + .1 + .01 + .001) is:
  • A.
    1.001
  • C.
    1.003
  • B.
    1.011
  • D.
    1.111
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Answer : [D]
Explanation :
 
 
  1.0
  0.1
  0.01
+ 0.001
  1.111
   
   
 
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37.
The correct expression of 6.46 in the fractional form is:
  • A.
    646  
    99  
  • C.
    640  
    100  
  • B.
    64640    
    1000  
  • D.
    640    
    99  
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Answer : [D]
Explanation :
 
6.46 = 6 + 0.46 = 6 +
46
99
=
594 + 46
99
=
640
99
   
 
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38.
54.327 x 357.2 x 0.0057 is the same as:
  • A.
    5.4327 x 3.572 x 5.7
  • C.
    54327 x 3572 x 0.0000057
  • B.
    5.4327 x 3.572 x 0.57
  • D.
    None of these
  • Answer & Explanation
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Answer : [A]
Explanation :
 
Number of decimal places in the given expression = 8
 
Number of decimal places in (a) = 8
 
Number of decimal places in (b) = 9
 
Number of decimal places in (c) = 7
 
Clearly, the expression in (a) is the same as the given expression.
 
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39.
 
8(3.75)3 + 1
(7.5)2 - 6.5
    is equal to :    
  • A.
    9  
    5  
  • C.
    4.75
  • B.
    2.75
  • D.
    8.5
  • Answer & Explanation
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Answer : [C]
Explanation :
 
Given expression =
(2 x 3.75)3 + (1)3
(7.5)2 - (7.5 x 1) + (1)2
=
(7.5)3 + (1)3
(7.5)2 - (7.5 x 1) + (1)2
 
 
  =  
a3 + b3
a2 - ab + b2
   = (a+b) = (7.5 + 1) = 8.5  
 
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40.
16.02 x 0.001 = ?
  • A.
    0.001602
  • C.
    0.1602
  • B.
    0.01602
  • D.
    1.6021
  • Answer & Explanation
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Answer : [B]
Explanation :
 
1602 x 1 = 1602. Sum of decimal places = 5.
 
      16.02 x 0.001 = 0.01602.    
 
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