Total number of four digit odd numbers that can be formed

• Permutation Combination

Total number of four digit odd numbers that can be formed using 0, 1, 2, 3, 5, 7 are

1. 216
2. 375
3. 400
4. 720

Answer

Odd numbers are 1, 3, 5, 7.

We have to fill up four places like TH H T U

Case: If repetition is allowed

= ⁵C₁ x 6² x ⁴C₁

The correct option is D.