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41.
The value of 2.136 is:
  • A.
    47  
    220  
  • C.
    2 3  
    22  
  • B.
    68    
    495  
  • D.
    None of these
  • Answer & Explanation
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Answer : [C]
Explanation :
 
2.136 = 2 + 0.136 = 2 +
136 - 1
990
 = 2 +
3
22
 = 2
3
22
   
 
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42.
If 1.125 x 10k = 0.001125, then the value of k is :
  • A.
    -4
  • C.
    -2
  • B.
    -3
  • D.
    -1
  • Answer & Explanation
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Answer : [B]
Explanation :
 
10k =
0.001125
1.125
=
1.125
1125
=
1.125 x 103
1125 x 103
=
1
103
 = 10-3
 
      k = -3    
 
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43.
Which of the following has fractions in ascending order?
  • A.
    2 , 3 , 7 , 9 , 8    
    3 5 9 11 9    
  • C.
    3 , 2 , 7 , 9 , 8    
    5 3 9 11 9    
  • E.
    8 , 9 , 7 , 3 , 2    
    9 11 9 5 3    
  • B.
    3 , 2 , 9 , 7 , 8    
    5 3 11 9 9    
  • D.
    8 , 9 , 7 , 2 , 3    
    9 11 9 3 5    
  • Answer & Explanation
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Answer : [D]
Explanation :
 
Converting each of the given fractions into decimal form, we get:
 
2
3
= 0.66,
3
5
 = 0.6,
7
9
 = 0.77,
9
11
 = 0.81,
8
9
 = 0.88  
 
Clearly, 0.6 < 0.66 < 0.77 <0.81 < 0.88. So,
3
5
<
2
3
<
7
9
<
9
11
<
8
9
   
 
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44.
What will come in place of question mark in the following equation?
54. (?) 3 + 543 + 5.43 = 603.26
  • A.
    5
  • C.
    8
  • B.
    6
  • D.
    None of these
  • Answer & Explanation
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Answer : [C]
Explanation :
 
Let x + 543 + 5.43 = 603.26
 
Then, x - 603.26 - (543 + 5.43)
 
= 603.26 - 548.43
 
= 54.83
 
    Missing digit = 8.    
 
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45.
The value of
489.1375 x 0.0483 x 1.956
0.0873 x 92.581 x 99.749
  is closest to:      
  • A.
    0.006
  • C.
    0.6
  • B.
    0.06
  • D.
    6
  • Answer & Explanation
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Answer : [B]
Explanation :
 
489.1375 x 0.0483 x 1.956
0.0873 x 92.581 x 99.749
=
489 x 0.05 x 2
0.09 x 93 x 100
 =
489
9 x 93 x 10
       
 
  =
163
279
x
1
10
=
0.58
10
 = 0.058 = 0.06    
 
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