How many odd numbers are possible between 1 to 1000000000?

How many odd numbers are possible between 1 to 1000000000? find out the number of odd number of digits?

Quiz

Answer/Solution

499999999

Steps/Work

There are always one odd and one even no. And the question is odd no. Between 1 to 1000000000
So we have to find no. Between 1 to 1000000000 so we should not includes 1
1000000000/2 -1=499999999
ANSWER:E