Question

The total number of $7$ digit positive integral numbers with distinct digits that can be formed using the digits $4,3,7,2,1,0,5$ is

• A. $4320$
• B. $4340$
• C. $4310$
• D. $4230$
• E. $4220$

Answer 1

The correct option is A $4320$

Given digits are $4,3,7,2,1,0,5$
Total ways$=6\times 6\times 5\times 4\times 3\times 2\times 1=4320$