Answers

2014-07-18T23:53:13+05:30

This Is a Certified Answer

×
Certified answers contain reliable, trustworthy information vouched for by a hand-picked team of experts. Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest.
Let the no of correct answer be x than marks he got for correct answer be 4x . No of wrong answers and unanswered be (180-x) marks deducted be -1(180-x) now total marks = 450 => 4x -(180-x) = 450 => 5x = 450 +180 => 5x = 630 => x= 630/5 => x= 126 => he answered 126 question correctly
0