Numbers starting with 2:

These are the numbers from 200 to 299. Total numbers = 200 to 299 = 299 - 200 + 1 Formula: =$299 - 200 + 1$ Numbers ending with 2:

These numbers are 102, 112, 122, ..., 292. First term = 102, last term = 292, common difference = 10. Formula to calculate number of terms: =$(292 - 102) / 10 + 1$ Overlap (number 202):

Subtract 1 for the overlap. Total count: Formula to calculate total: =$(299 - 200 + 1) + ((292 - 102) / 10 + 1) - 1 = 110$