Question

how many 3 digit number can be formed without using 0,1,2,3,4,5 and 6?

Answer 1

Answer:

6

Step-by-step explanation:

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Without using 0,1,2,3,4,5,6 , we have 7,8,9

So :

3!

Answer 2

Answer:

27

Step-by-step explanation: