ITMC 2026 Grade 5 National Preliminary sample-r1 Question 19

Consider the indicated repeating pattern 2, 0, 1, 9, 2, 5, 6, 3, 2, 0, 1, 9, 2, 5, 6, 3, 2, 0, 1, 9, … . In its first 80 terms, how many more 2s than 5s occur?