Difference between revisions of "2023 AMC 10A Problems/Problem 23"

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<math>\textbf{(A) } 9 \qquad \textbf{(B) } 13\qquad \textbf{(C) } 15 \qquad \textbf{(D) } 17 \qquad \textbf{(E) } 19</math>
 
<math>\textbf{(A) } 9 \qquad \textbf{(B) } 13\qquad \textbf{(C) } 15 \qquad \textbf{(D) } 17 \qquad \textbf{(E) } 19</math>
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== Video Solution 1 by OmegaLearn ==
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https://youtu.be/D_T24PrVk18

Revision as of 16:17, 9 November 2023

If the positive integer c has positive integer divisors a and b with c = ab, then a and b are said to be $\textit{complementary}$ divisors of c. Suppose that N is a positive integer that has one complementary pair of divisors that differ by 20 and another pair of complementary divisors that differ by 23. What is the sum of the digits of N?

$\textbf{(A) } 9 \qquad \textbf{(B) } 13\qquad \textbf{(C) } 15 \qquad \textbf{(D) } 17 \qquad \textbf{(E) } 19$

Video Solution 1 by OmegaLearn

https://youtu.be/D_T24PrVk18