<p>I got (C) 1/16 as an answer. Because the rope is always being cut in half (divided by two) the denominator must be equal to an exponent of two: 2,4,8,16,32…</p>
<p>A similar way of doing this is to keep cutting the rope in half until you find one the matches the answer: 1/2–>1/4–>1/8–>1/16.</p>
<p>^Kind of a waste of time for such an easy question.</p>
<p>The answer needs to be in the from 1/(2^x), where x is an integer… so [C]</p>