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Out of seven given numbers, the average of the first four numbers is 4 and that of the last four numbers is also 4. If the average of all the seven numbers is 3, fourth number is
  • a)
    3    
  • b)
    4
  • c)
    7    
  • d)
    11
  • e)
    None of these
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Out of seven given numbers, the average of the first four numbers is 4...
Fourth number = (4x4+4x4 – 3x7)
= (16 + 16-21) = 11
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Most Upvoted Answer
Out of seven given numbers, the average of the first four numbers is 4...
Fourth number = (4x4+4x4 – 3x7)
= (16 + 16-21) = 11
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Community Answer
Out of seven given numbers, the average of the first four numbers is 4...
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Out of seven given numbers, the average of the first four numbers is 4 and that of the last four numbers is also 4. If the average of all the seven numbers is 3, fourth number isa)3 b)4c)7 d)11e)None of theseCorrect answer is option 'D'. Can you explain this answer?
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