How many odd numbers between 300and 1000 can be made with the digits 1 5 7 repetition not allowed

All numbers between 300 and 1000 are 3 digit numbers and none of them start with 1.
So, 100th's position can be filled with either 5 or 7 i.e, 2 ways.
Now, 10th's position can be filled in 2 ways with 1 or the number not filled in 100th position.
The remaining number is filled in units position i.e, 1 way.
So, the final answer is 2*2*1=4 odd numbers.
11 years agoHelpfull: Yes(3) No(0)
only 4 r possble
dey r (571,517,715,751)
11 years agoHelpfull: Yes(0) No(0)
4 numbrs there r
11 years agoHelpfull: Yes(0) No(0)

How many odd numbers between 300and 1000 can be made with the digits 1,5,7(repetition not allowed)