MathDB
2018 Individual #15

Source:

January 13, 2023
2018 Individual

Problem Statement

Gordon has the least number of coins (half-dollars, quarters, dimes, nickels, pennies) needed to make 99\cent. He randomly chooses one. What is the probability that it is a penny?
<spanclass=latexbold>(A)</span>15<spanclass=latexbold>(B)</span>13<spanclass=latexbold>(C)</span>12<spanclass=latexbold>(D)</span>23<spanclass=latexbold>(E)</span>34<span class='latex-bold'>(A) </span> \dfrac15\qquad<span class='latex-bold'>(B) </span> \dfrac13\qquad<span class='latex-bold'>(C) </span> \dfrac12\qquad<span class='latex-bold'>(D) </span> \dfrac23\qquad<span class='latex-bold'>(E) </span> \dfrac34