Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions

A question paper (MCQ) contains 30 Q's.crrct ans crries 8 marks and the wrong one reduce the mark by 4.a student gets the overall mark 0.find the no:of ans

right and wrong.I know that the ans is 10 and 20 but,i need the technique to do this kind of Q's.can eny one give me an equation for this?



i have done 8*10 as there are 10 correct and you told that each correct one carries 8 marks and similarly for incorrected one too
or it may be like 4*10--8*5 and 5 question unattempted........
0 0 0
Comment has been deleted
Comment has been deleted
thanks again:)
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts