In a certain code '786' means 'Study very hard', '958' means 'Hard work pays', '645' means 'Study and work', which is the code for 'very' ?

किसी निश्चित कूट में '786' का अर्थ 'Study very hard' , '958' का अर्थ 'Hard work pays' , '645' का अर्थ 'Study and work' , तो 'very' का कोड क्या होगा ?

1. A8
2. B6
3. C7
4. D5

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Correct answer: C. 7

Explanation

'Study' is common to the 1st and 3rd codes → 6; 'hard' to the 1st and 2nd → 8; so 'very' = 7.

‘Study’ = 6 (पहला व तीसरा), ‘hard’ = 8 (पहला व दूसरा), अतः ‘very’ = 7।