Question

how many of thee 900 digit numbers have at least one even digit?

Answer 1

100 , 500 , 300.....✔✌☺

Answer 2

Heya!!

Here is your answer:

number of even digit number = 5×5×5= 125

400= even number on 100 place
250 = even number on 10 place
125= even number on 1 place

thee 900 digit numbers have at least one even digit = 400 + 250 + 125 = 775

so, the answer is 775