MathDB
Removing Numbers from an Addition Problem

Source:

March 2, 2009

Problem Statement

Which terms must be removed from the sum \frac12 \plus{} \frac14 \plus{} \frac16 \plus{} \frac18 \plus{} \frac1{10} \plus{} \frac1{12} if the sum of the remaining terms is equal to 1 1? <spanclass=latexbold>(A)</span> 14 and 18<spanclass=latexbold>(B)</span> 14 and 112<spanclass=latexbold>(C)</span> 18 and 112<spanclass=latexbold>(D)</span> 16 and 110<spanclass=latexbold>(E)</span> 18 and 110 <span class='latex-bold'>(A)</span>\ \frac14\text{ and }\frac18 \qquad <span class='latex-bold'>(B)</span>\ \frac14\text{ and }\frac1{12} \qquad <span class='latex-bold'>(C)</span>\ \frac18\text{ and }\frac1{12} \qquad <span class='latex-bold'>(D)</span>\ \frac16\text{ and }\frac1{10} \qquad <span class='latex-bold'>(E)</span>\ \frac18\text{ and }\frac1{10}