How many four digit positive integers are there with thousands digit 2?

Answer 1

There are one thousand. Starting at 2000 and going to 2999

Answer 2

There are 900 four-digit positive integers with the thousands digit being 2. Why? Because you have 10 choices for the hundreds digit (0-9), 10 choices for the tens digit (0-9), and 1 choice for the units digit (0-9), making a total of 10 * 10 * 1 = 1000. But since we are looking for positive integers, we subtract the 100 integers that start with 0, leaving us with 900 four-digit positive integers with 2 in the thousands place.

Answer 3

There are 2,000 of them ... every positive integer (counting number) from 2,000 to 2,999 .