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a boys get 3 marks correct sum losses 2 to each incorrect sum he does 24 sum obtained 37 marks find the number of correct sum? |
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Answer» LET the correct SUM be X since total attempted question = 24 THUS incorrect = 24-x he gets 3 MARKS for correct -2 for incorrect thus 3(X) -2(24-x) = 37 3x-48+2x = 37 5x = 85 X = 17 |
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