Question

A test has 50 questions. a student scores 1 mark for a correct answer, -1/3 for a wrong answer, and –1/6 for not attempting a question. if the net score of a student is 32, the number of questions answered wrongly by that student cannot be less than?

Answer 1

take correct ans be x and wrong answers be y and questions not attempted be z
then the equation will be x -1/3y-1/6z=33 and
x+y+z=50
now solve it through any method
substitution, elimination or cross-multiplication