Question

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

• A. $216$
• B. $375$
• C. $400$
• D. $720$

Answer 1

The correct option is D $720$

The given digits are $0,1,2,3,5,7$

For thousandth position we have $5$ choices.

For tenth and hundredth position we have $6$ choices each and for one's position we have $4$ choices since the number has to be odd.

So total number of such numbers $=5\times 6\times 6\times 4=720$