Question

How many times will the digit "3" appear if we write all whole numbers from 1-9999?

Answer 1

3000?

Explanation:

Answer 2

4000

Explanation:

from 1 - 1000 = 300

1's = 100

10's = 100

100's = 100

1000's = 0

300 * 10 = 3000

then add in all the 3000's (ie 3001,3002, etc ) that adds one more thousand

3000 + 1000 = 4000