Question

How many 3 digit number can be formed by using the digits 1 to 9 if no digit is repeated.

Answer 1

Answer:

]|I{•------» Hҽყ «------•}I|[

Step-by-step explanation:

3-digit numbers are to be formed

Three places are to be filled with digits 1 to 9

This can be done in 9×8×7=504 ways

Answer 2

• 3-digit numbers are to be formed

• Three places are to be filled with digits 1 to 9

• This can be done in 9×8×7=504 ways