In a certain code, '731' means 'study very hard', '953' means 'hard work pays' and '145' means 'study and work'. Which of the fol…

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Question

In a certain code, '731' means 'study very hard', '953' means 'hard work pays' and '145' means 'study and work'.

Which of the following is the code for 'very'?

  1. A. 1
  2. B. 7 (Correct answer)
  3. C. 4
  4. D. 9

Correct Answer

Option B — 7

Detailed Solution & Explanation

The correct answer is 7.

Key Points

  • By matching words appearing in two coded sentences: "study" appears in codes 731 and 145 -- common digit is 1 -- so study = 1. "work" appears in 953 and 145 -- common digit is 5 -- so work = 5. "hard" appears in 731 and 953 -- common digit is 3 -- so hard = 3. In code 731: study(1) is in position 3, hard(3) is confirmed, leaving 7 = very. So "very" is coded as 7.