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Amiraneli
[1.4K]
3 years ago
14
A lock has two digit numeric code, with the numbers 1 through 7 available for each digit of the code. Note that numbers can be r
epeated in the code so there are 7 possibilities for each two digits. Find the total number of possible codes for the lock.
Mathematics
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lubasha
[3.4K]
3 years ago
7
0
If there is 2 digits and 7 numbers the combos would be:
1,1 2,1 3,1 4,1 5,1 6,1 7,1
1,2 2,2 3,2 4,2 5,2 6,2 7,2
1,3 2,3 3,3 4,3 5,3 6,3 7,3
1,4 2,4 3,4 4,4 5,4 6,4 7,4
1,5 2,5 3,5 4,5 5,5 6,5 7,5
1,6 2,6 3,6 4,6 5,6 6,6 7,6
1,7 2,7 3,7 4,7 5,7 6,7 7,7
Therefore there are 49 possible combinations :)
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