Question

How many 5 digit numbers are possible from digits 1, 2, 3, 4, 5, 6, 7. When each digit is distinct?

• A. 2520
• B. 1260
• C. 630
• D. None of these

Answer 1

The correct option is A 2520

${}^7{P}_{5}or7\times 6\times 5\times 4\times 3=2520$