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Mon 12 Dec, 2011 01:22 pm
I have lock for which I do not remember the combination. However, since it is so old the customer service hotline said the lock will open as long as I am within two of the correct number. Suppose that the lock contains the numbers 1 through 40. How many combinations do you need to test? Describe an efficient way that you plan to test these combinations.
@jon12,
Test the sequence 3, 8, 13 ,23, 28, 33, 38.
I'll let you work why !
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