Idea: Write more numbers to find patterns in the future. For a question like this, you can't write all the figures, and there must be a pattern behind it.

Process: This string of numbers is 1, 9, 8, 9, 2, 8, 6, 8, 4, 2, 8, 8, 4, 2, 8, 6, 8, 8, 4 ... followed by 2, 8, 6, 8, 8. Since 2002 =4+6*333, the number in 2002 should be 4: 68 42868 4268 4268 `` (2002-2)/4 = 500 A: 4.