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In a test( 5) marks are given for every correct answer and (-2) marks are given for every inncorrect answer JAy also answerd all ques and scored (-12) marks through he got 4 correct ans . How many inncorrect answer had they attempted?
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In a test( 5) marks are given for every correct answer and (-2) marks ...
Let total no.of incorrect answer be x

Marks obtained for correct answer=5×4=20

Marks deducted for incorrect answer=2×(x)=2x

Total marks=20-2x

=> -12=20-2x

=> 2x=32

x=16 . ..
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In a test( 5) marks are given for every correct answer and (-2) marks are given for every inncorrect answer JAy also answerd all ques and scored (-12) marks through he got 4 correct ans . How many inncorrect answer had they attempted?
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