Question

How many numbers are there between 10 and thousand such
that at least one of the digit of the number is three

Answer 1

30,00,180 digits are between 10 to 10,000

Step-by-step explanation:

Digits under 1-10 =10

Digits under 10-100=20×9=180

Digits under 100-200=300×10=3,000

Hence we have hundred Hundreds in 10,000

So now we have =3,000×100=30,00,000+180

=30,00,180