HCL Papers: Sample Questions 43 - 45 of 57

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Question number: 43

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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

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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