According to the terms of partial amnesty, a jailer made n passes along a row of n cells., originally locked as follows. In the first pass, he turned every lock (i.e. he opened them all). In the second pass, he turned every other lock, beginning with cell 2. In the third pass, he turned every third lock, beginning with cell 3. This continues so that in the kth pass, he turned kth lock, beginning with cell k. After n passes, which cells remain unlocked?
According to the terms of partial amnesty, a jailer made n passes along a row of n cells., originally locked as follows. In the first pass, he turned every lock (i.e. he opened them all). In the second pass, he turned every other lock, beginning with cell 2. In the third pass, he turned every third lock, beginning with cell 3. This continues so that in the kth pass, he turned kth lock, beginning with cell k. After n passes, which cells remain unlocked?
Algebra and Trigonometry (MindTap Course List)
4th Edition
ISBN:9781305071742
Author:James Stewart, Lothar Redlin, Saleem Watson
Publisher:James Stewart, Lothar Redlin, Saleem Watson
Chapter14: Counting And Probability
Section14.CT: Chapter Test
Problem 3CT: An Internet service provider requires its customer to select a password consisting of four letters...
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