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| *Vultures Knob>>>Bike Lock |
A bike lock is a combo of 3 dials, each numbered from 1 to 9. How many possible combinations are there? |
is it 19,683 combos? I think the correct number is 729. 111, 112, 113, 114, 115, 116, 117, 118, 119, 121, 122, 123, 123, 125, 126, 127, 128, 129, 131 . . . 991, 992, 993, 994, 995, 996, 997, 998, 999 There are 9 possibilities for each of 3 positions, so the total number is 9 * 9 * 9 = 729. yes it is 19683 combination 900 If you considered each number in the lock as one digit in a number, you would have a 3 digit number altogether. If the largest number was a nine, the largest combination of those numbers you could possibly have would be 999. The smallest number you could have would be 111. Now subtract 110 (because you cant have less than the smallest number of 111). That gives you 888 combinations. Something like that. There are 9 possibilities for each of 3 positions, so the total number is 9 * 9 * 9 = 729 9X9X9=729 thats 9*9*9=729 |
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