In an 'Intermediate Challenge' there are 25 questions. For the first 15 questions, 5 marks are awarded for each correct answer and 0 for each incorrect answer. For questions 16-20, each correct answer is awarded 6 marks but an incorrect answer gets -1. For questions 21-25, again 6 marks are given for a correct answer, but -2 for each incorrect one. The maximum score is therefore 135 (and the minimum score -10).
Which of the following scores is it impossible to achieve in this challenge?
Select one option, then click Submit.
126
127
128
129
130
Select an option, then submit.
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Intermediate Mathematical Challenge 2002 (2002)
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