In a mathematical competition consisting of 25 problems, 8 marks are given for each correct response, 0 marks for each incorrect response and each no response is awarded 3 marks. Tim scored 121 marks in this competition. What is the smallest number of incorrect responses he could have?

Ans: 3 incorrect (11 correct ; 11 no response and 3 incorrect)
your answer is also correct Geewhiz0203


14 questions were answered by Tim correctly, he gave no response to 3 questions and he answered 8 questions incorrectly.
8 questions are responsed incorrectly by tim .

See! the condition imposed was THE LEAST NUMBER OF INCORRECT RESPONSES; so it should be 3 although there might be other combinations of correct, incorrect and unanswered responses.