2012 AMC 8 Problems/Problem 15

Problem

The smallest number greater than 2 that leaves a remainder of 2 when divided by 3, 4, 5, or 6 lies between what numbers?

$\textbf{(A)}\hspace{.05in}40\text{ and }50\qquad\textbf{(B)}\hspace{.05in}51\text{ and }55\qquad\textbf{(C)}\hspace{.05in}56\text{ and }60\qquad\textbf{(D)}\hspace{.05in}61\text{ and }65\qquad\textbf{(E)}\hspace{.05in}66\text{ and }99$

Solution

To find the answer to this problem, we need to find the least common multiple of $3$ , $4$ , $5$ , $6$ and add $2$ to the result. The least common multiple of the four number is $60$ , and adding $2$ , we find the number we want is $62$ . Now we need to find the range which contains $62$ . The only such range and our final answer is $\boxed{\textbf{(D)}\ 61\text{ and }65}$ .

2012 AMC 8 (Problems • Answer Key • Resources)
Preceded by Problem 14	Followed by Problem 16
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2012 AMC 8 Problems/Problem 15

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