Question

17. In a class test some MCQ questions are given to the students. For every correct answer
3 marks are awarded, but for every wrong answer 2 marks are deducted. A students
answered 14 questions correctly, but got 30 marks. How many questions did he answer
wrongly?​

Answer 1

Answer:

Total right scored = 14 x 3

= 42 marks

But got only 3O marks

So wrong answer = ( 42 - 3O )

=12

Thus we know that wrong answer = - 2

12\2 = 6

6 question answered wrongly