MathDB
Learning The Times Tables

Source: 2015 AMC12A #6

February 26, 2015
AMC

Problem Statement

Back in 1930, Tillie had to memorize her multiplication tables from 0×00\times 0 through 12×1212\times 12. The multiplication table she was given had rows and columns labeled with the factors, and the products formed the body of the table. To the nearest hundredth, what fraction of the numbers in the body of the table are odd?
<spanclass=latexbold>(A)</span>0.21<spanclass=latexbold>(B)</span>0.25<spanclass=latexbold>(C)</span>0.46<spanclass=latexbold>(D)</span>0.50<spanclass=latexbold>(E)</span>0.75<span class='latex-bold'>(A) </span>0.21\qquad<span class='latex-bold'>(B) </span>0.25\qquad<span class='latex-bold'>(C) </span>0.46\qquad<span class='latex-bold'>(D) </span>0.50\qquad<span class='latex-bold'>(E) </span>0.75