Question

Please help will put the question

Answer 1

what is it?

Answer 2

There

Answer 3

ok think about how many numbers are between 100 and 999

Answer 4

900

Answer 5

Ok

Answer 6

digits with 0 must be in the ones of tens place

Answer 7

one *or

Answer 8

for the number 100 - 200, you have
100,110,120,130, etc

Answer 9

Number of numbers between 100 and 999 with 0s is:
100
110
120
130
140
150
160
170
180
190
So far it's 10.
We can change the first digit to be 2 and get the same results. That would be 2 * 10.
SInce we're going to 999, up to 900 would be 9 * 10. Then since we have 9 more '10s', We add another 9.
(9 * 10) + 9 = Amount of numbers with at least one 0.

Answer 10

So 99

Answer 11

Thank you i get it