There are 210 of them:
{1,2,3,4,5,6}, {1,2,3,4,5,7}, (1,2,3,4,5,8}, {1,2,3,4,5,9}, {1,2,3,4,5,10},
{1,2,3,4,6,7}, {1,2,3,4,6,8}, (1,2,3,4,6,9}, {1,2,3,4,6,10},
{1,2,3,4,7,8}, {1,2,3,4,7,9}, (1,2,3,4,7,10},
...
{1,3,4,5,6,7}, {1,3,4,5,6,8} and so on.
...
{2,3,4,5,6,7} etc
You can fill in the gaps and work out the rest.
about 1,0000000000000
Assuming each "digit" actually has 10 different states, there are one million combinations possible in a six-digit combination lock. However, many combination lock designs actually have fewer than 10 different states per "digit", resulting in far fewer actual combinations on such locks.
9!/6!, if the six different orders of any 3 digits are considered distinct combinations.
it's 610, which is 60,466,176. Since each digit spot could be anything 0-9 there are 10 numbers to try for each digit, making it 610.
That depends on how many of the digits are repeated. If no digits are repeated, you have 9 choices for the first digit, 8 choices for the second, etc.; for a total of 9 x 8 x 7 x 6 x 5 x 4.
about 1,0000000000000
Assuming each "digit" actually has 10 different states, there are one million combinations possible in a six-digit combination lock. However, many combination lock designs actually have fewer than 10 different states per "digit", resulting in far fewer actual combinations on such locks.
9!/6!, if the six different orders of any 3 digits are considered distinct combinations.
factorial six tat is 6*5*4*3*2*1=720 combinations
it's 610, which is 60,466,176. Since each digit spot could be anything 0-9 there are 10 numbers to try for each digit, making it 610.
7
That depends on how many of the digits are repeated. If no digits are repeated, you have 9 choices for the first digit, 8 choices for the second, etc.; for a total of 9 x 8 x 7 x 6 x 5 x 4.
106 or a million.
Six combinations if you use each digit only once per combination: 157 175 517 571 715 and 751.
There are 28706 such combinations. 5456 of these comprise three 2-digit numbers, 19008 comprise two 2-digit numbers and two 1-digit numbers, 4158 comprise one 2-digit number and four 1-digit numbers and 84 comprise six 1-digit numbers.
111111. Since there are six digits, there must be a repeated digit, so why not repeat all ones to get the smallest one.
Any digit that you like.