ITMC 2026 Grade 4 National Preliminary sample-r1 Question 29

The displayed repeating pattern is $1,2,3,4,5,1,2,3,4,5,1,2,3,4,5,\ldots $. Counting from the left, the first number is 1, the seventh is 2 and the tenth is 5. What is the 999th number?