Question

What is the least number that can be formed using the digits 4, 9, 2, 1, 3, 0 and 6 without repeating any of the digits?

Answer 1

Hey

Here is your answer,

The least number that can be formed using the digits 4, 9, 2, 1, 3, 0 and 6 without repeating any of the digits

Number starts with zero ➡ 012349
Number starts with non zero ➡ 102349

Hope it helps you!

Answer 2

1st place can be filled in 7 different ways
2nd...... 6 ways
3rd........5ways
And so on.....

7*6*5*4*3*2*1

=5040

OR
7C7 ways