HCL Papers: Sample Questions 43  45 of 57
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Question number: 43
» Aptitude
Short Answer Question▾
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What is the 1′s complement of 1100110?
Explanation
 The given number is 1100110.
 This number is in binary (base 2) form.
 1′s complement of number means interchange the positions of 0′s and 1′s. If we will replace all 0 with 1 and all 1 with 0 then the resultant number is the 1′s complement of the given number.
 Here, replacing all 0 with 1 and all 1 with 0, number will be, 0011001.
 Hence, the 1′s complement of the given number is 0011001.
Question number: 44
» Aptitude
MCQ▾
Question
= X
Choices
Choice (4)  Response  

a. 


b. 


c. 


d.  2 (10) ^{4 } 

Answer
c.Explanation
= X
= X
Here, we need to find the value of X.
X =
X =
Hence, answer will be .
Question number: 45
» Aptitude
Short Answer Question▾
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A man bought 30 kg apples at cost of 10.5Rs/kg and more 30 kg apples at cost of 9.5 Rs/kg. He combines both of them, then at what price should he sell to have a gain of 35%?
Explanation
 Man bought 30 kg apples at cost of Rs. 10.5/kg. So, he spends Rs. 315 in purchasing apples.
 He bought more 30 kg apples at Rs. 9.5/kg. So, he spends Rs. 285 in purchasing apples.
 Man purchased total 60 kg of apples in Rs. 600 .
 So, price for 1 kg of apple will be, 600/60 = 10 Rs.
 If he wants to gain 35 % in selling then selling price should be,
 So, selling price of apples should be