Question

How many 3-digit numbers are possible to form with all the digits being different?

Answer 1

We can make 120 three digit distinct numbers

Explanation:

Answer 2

• 648

Explanation:

If the number is xyz, we have:

• x = 1 to 9, total 9 ways
• y = 0 to 9, total 10 ways minus 1 to prevent repetition, so 9 ways
• z = 0 to 9, total 10 ways minus 2 ways to prevent repetition, so 8 ways

Total number of possible 3-digit numbers:

• 9*9*8 = 648