The number of three-digit odd numbers with no repeated digits is

a) 288, b) 320, c)336, d) 360, e) 405.

1 answer

5 digits possible in the unit digit position
leaving 8 digits for the lead digit, since it can't be a zero and one digit is gone
leaving 8 digits for the tens position, could have the zero here

Number of cases = 5*8*8 = 320