Question

{0,1,2,3,4,5,6}
How many possibilities of
3 digit numbers
3 digit (even)
3 digit w/o repeating. I think I know the answer to the last which should be 6x5x4 but not sure!!

Answer 1

The first one is: 7*7*7
The second is: 7*7*4
The last is: 7*6*5

Answer 2

ok, but you counted the 0, why?

Answer 3

yeh u cant start with a zero

Answer 4

Because it is in the set of original numbers. 000 is a number with three digits.
If you did not want to count 000 and other numbers with 0's in the front the answers would be:
The first one is: 6*7*7 The second is: 6*7*4 The last is: 7*6*5

Answer 5

Note the last one you should still count 012 and others like it because it only specifies 3 digits without repeating.

Answer 6

thank you

Answer 7

c'est 3 puissance 7 (3^{7}) parce que chacun de ces 7 chiffres peuvent prendre n'importe quel position dans ce nombre à trois chiffres ex:111 122 112 112