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Leap days

Source: AMC 10 2006B, Problem 16

February 17, 2006
modular arithmeticAMC

Problem Statement

Leap Day, February 29, 2004, occurred on a Sunday. On what day of the week will Leap Day, February 29, 2020, occur? <spanclass=′latex−bold′>(A)</span>Tuesday<spanclass=′latex−bold′>(B)</span>Wednesday<spanclass=′latex−bold′>(C)</span>Thursday<spanclass=′latex−bold′>(D)</span>Friday<spanclass=′latex−bold′>(E)</span>Saturday <span class='latex-bold'>(A) </span> \text{Tuesday} \qquad <span class='latex-bold'>(B) </span> \text{Wednesday} \qquad <span class='latex-bold'>(C) </span> \text{Thursday} \qquad <span class='latex-bold'>(D) </span> \text{Friday} \qquad <span class='latex-bold'>(E) </span> \text{Saturday}
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