Answer :
He received 4 points for every correct answer and 0 points for every wrong answers (no penality).let x=number of correct answers ,y=number of wrong answers which is given as 10
4x+(0)y=76,4x=76,x=19
the total number of questions is
number of wrong answers + number of correct answers=x+y
x=19,y=10,x+y=19+10=29
4x+(0)y=76,4x=76,x=19
the total number of questions is
number of wrong answers + number of correct answers=x+y
x=19,y=10,x+y=19+10=29